diff --git a/app/helpers/Evaluation/EvaluationResults/TaskResults/EvaluationTaskResult.php b/app/helpers/Evaluation/EvaluationResults/TaskResults/EvaluationTaskResult.php
index 8a547310b..f9674148c 100644
--- a/app/helpers/Evaluation/EvaluationResults/TaskResults/EvaluationTaskResult.php
+++ b/app/helpers/Evaluation/EvaluationResults/TaskResults/EvaluationTaskResult.php
@@ -10,7 +10,6 @@
  */
 class EvaluationTaskResult extends TaskResult
 {
-
     /** @var float|null Explicit score from the results */
     private $score = null;
 
diff --git a/app/helpers/ExerciseConfig/Pipeline/Box/BoxService.php b/app/helpers/ExerciseConfig/Pipeline/Box/BoxService.php
index 45ada6b5a..740726335 100644
--- a/app/helpers/ExerciseConfig/Pipeline/Box/BoxService.php
+++ b/app/helpers/ExerciseConfig/Pipeline/Box/BoxService.php
@@ -13,7 +13,6 @@
  */
 class BoxService
 {
-
     /**
      * Associative array indexed by type identifier and containing
      * identifications of box classes.
@@ -38,8 +37,6 @@ public function __construct()
             ElfExecutionBox::$ELF_EXEC_TYPE => ElfExecutionBox::class,
             WrappedExecutionBox::$BOX_TYPE => WrappedExecutionBox::class,
             FpcCompilationBox::$FPC_TYPE => FpcCompilationBox::class,
-            MonoCompilationBox::$MCS_TYPE => MonoCompilationBox::class,
-            MonoExecutionBox::$MONO_EXEC_TYPE => MonoExecutionBox::class,
             FetchFilesBox::$FETCH_TYPE => FetchFilesBox::class,
             FetchFileBox::$FETCH_TYPE => FetchFileBox::class,
             Python3RunBox::$BOX_TYPE => Python3RunBox::class,
diff --git a/app/helpers/ExerciseConfig/Pipeline/Box/Boxes/MonoCompilationBox.php b/app/helpers/ExerciseConfig/Pipeline/Box/Boxes/MonoCompilationBox.php
deleted file mode 100644
index 21b850968..000000000
--- a/app/helpers/ExerciseConfig/Pipeline/Box/Boxes/MonoCompilationBox.php
+++ /dev/null
@@ -1,164 +0,0 @@
-<?php
-
-namespace App\Helpers\ExerciseConfig\Pipeline\Box;
-
-use App\Helpers\ExerciseConfig\Compilation\CompilationParams;
-use App\Helpers\ExerciseConfig\Pipeline\Box\Params\ConfigParams;
-use App\Helpers\ExerciseConfig\Pipeline\Box\Params\LinuxSandbox;
-use App\Helpers\ExerciseConfig\Pipeline\Box\Params\Priorities;
-use App\Helpers\ExerciseConfig\Pipeline\Box\Params\TaskType;
-use App\Helpers\ExerciseConfig\Pipeline\Ports\Port;
-use App\Helpers\ExerciseConfig\Pipeline\Ports\PortMeta;
-use App\Helpers\ExerciseConfig\VariableTypes;
-use App\Helpers\JobConfig\SandboxConfig;
-use App\Helpers\JobConfig\Tasks\Task;
-
-/**
- * Box which represents mcs compilation unit.
- */
-class MonoCompilationBox extends CompilationBox
-{
-    /** Type key */
-    public static $MCS_TYPE = "mcs";
-    public static $MCS_BINARY = "/usr/bin/csc";
-    public static $MAIN_CLASS_PORT_KEY = "main-class";
-    public static $EXTERNAL_SOURCES_PORT_KEY = "external-sources";
-    public static $ASSEMBLY_FILE_PORT_KEY = "assembly";
-    public static $DEFAULT_NAME = "Mono Compilation";
-
-    private static $initialized = false;
-    private static $defaultInputPorts;
-    private static $defaultOutputPorts;
-
-    /**
-     * Static initializer.
-     */
-    public static function init()
-    {
-        if (!self::$initialized) {
-            self::$initialized = true;
-            self::$defaultInputPorts = array(
-                new Port((new PortMeta())->setName(self::$MAIN_CLASS_PORT_KEY)->setType(VariableTypes::$STRING_TYPE)),
-                new Port(
-                    (new PortMeta())->setName(self::$EXTERNAL_SOURCES_PORT_KEY)->setType(
-                        VariableTypes::$FILE_ARRAY_TYPE
-                    )
-                ),
-                new Port((new PortMeta())->setName(self::$ARGS_PORT_KEY)->setType(VariableTypes::$STRING_ARRAY_TYPE)),
-                new Port(
-                    (new PortMeta())->setName(self::$SOURCE_FILES_PORT_KEY)->setType(VariableTypes::$FILE_ARRAY_TYPE)
-                ),
-                new Port(
-                    (new PortMeta())->setName(self::$EXTRA_FILES_PORT_KEY)->setType(VariableTypes::$FILE_ARRAY_TYPE)
-                )
-            );
-            self::$defaultOutputPorts = array(
-                new Port((new PortMeta())->setName(self::$ASSEMBLY_FILE_PORT_KEY)->setType(VariableTypes::$FILE_TYPE))
-            );
-        }
-    }
-
-    /**
-     * JudgeNormalBox constructor.
-     * @param BoxMeta $meta
-     */
-    public function __construct(BoxMeta $meta)
-    {
-        parent::__construct($meta);
-    }
-
-
-    /**
-     * Get type of this box.
-     * @return string
-     */
-    public function getType(): string
-    {
-        return self::$MCS_TYPE;
-    }
-
-    /**
-     * Get default input ports for this box.
-     * @return array
-     */
-    public function getDefaultInputPorts(): array
-    {
-        self::init();
-        return self::$defaultInputPorts;
-    }
-
-    /**
-     * Get default output ports for this box.
-     * @return array
-     */
-    public function getDefaultOutputPorts(): array
-    {
-        self::init();
-        return self::$defaultOutputPorts;
-    }
-
-    /**
-     * Get default name of this box.
-     * @return string
-     */
-    public function getDefaultName(): string
-    {
-        return self::$DEFAULT_NAME;
-    }
-
-
-    /**
-     * Compile box into set of low-level tasks.
-     * @param CompilationParams $params
-     * @return array
-     */
-    public function compile(CompilationParams $params): array
-    {
-        $task = $this->compileBaseTask($params);
-        $task->setCommandBinary(self::$MCS_BINARY);
-
-        $args = [];
-        if ($this->hasInputPortValue(self::$ARGS_PORT_KEY)) {
-            $args = $this->getInputPortValue(self::$ARGS_PORT_KEY)->getValue();
-        }
-        $externalSources = [];
-        if ($this->hasInputPortValue(self::$EXTERNAL_SOURCES_PORT_KEY)) {
-            $externalSources = $this->getInputPortValue(self::$EXTERNAL_SOURCES_PORT_KEY)
-                ->getValue(ConfigParams::$EVAL_DIR);
-        }
-        $extraFiles = [];
-        if ($this->hasInputPortValue(self::$EXTRA_FILES_PORT_KEY)) {
-            $extraFiles = $this->getInputPortValue(self::$EXTRA_FILES_PORT_KEY)
-                ->getValue(ConfigParams::$EVAL_DIR);
-        }
-        $mainClass = [];
-        if ($this->hasInputPortValue(self::$MAIN_CLASS_PORT_KEY)) {
-            $mainClass = [
-                "-main:" . $this->getInputPortValue(self::$MAIN_CLASS_PORT_KEY)->getValue()
-            ];
-        }
-
-        $task->setCommandArguments(
-            array_merge(
-                $args,
-                $this->getInputPortValue(self::$SOURCE_FILES_PORT_KEY)
-                    ->getValue(ConfigParams::$EVAL_DIR),
-                $externalSources,
-                $extraFiles,
-                $mainClass,
-                [
-                    "-out:" . $this->getOutputPortValue(self::$ASSEMBLY_FILE_PORT_KEY)
-                        ->getValue(ConfigParams::$EVAL_DIR)
-                ]
-            )
-        );
-
-        // check if file produced by compilation was successfully created
-        $binary = $this->getOutputPortValue(self::$ASSEMBLY_FILE_PORT_KEY)->getDirPrefixedValue(
-            ConfigParams::$SOURCE_DIR
-        );
-        $exists = $this->compileExistsTask([$binary]);
-
-        return [$task, $exists];
-    }
-}
diff --git a/app/helpers/ExerciseConfig/Pipeline/Box/Boxes/MonoExecutionBox.php b/app/helpers/ExerciseConfig/Pipeline/Box/Boxes/MonoExecutionBox.php
deleted file mode 100644
index 91323b55b..000000000
--- a/app/helpers/ExerciseConfig/Pipeline/Box/Boxes/MonoExecutionBox.php
+++ /dev/null
@@ -1,117 +0,0 @@
-<?php
-
-namespace App\Helpers\ExerciseConfig\Pipeline\Box;
-
-use App\Exceptions\ExerciseConfigException;
-use App\Helpers\ExerciseConfig\Compilation\CompilationParams;
-use App\Helpers\ExerciseConfig\Pipeline\Box\Params\ConfigParams;
-use App\Helpers\ExerciseConfig\Pipeline\Ports\Port;
-use App\Helpers\ExerciseConfig\Pipeline\Ports\PortMeta;
-use App\Helpers\ExerciseConfig\VariableTypes;
-
-/**
- * Box which represents execution of assembly in C# which will be executed with
- * mono.
- */
-class MonoExecutionBox extends ExecutionBox
-{
-    /** Type key */
-    public static $MONO_EXEC_TYPE = "mono-exec";
-    public static $MONO_BINARY = "/usr/bin/mono";
-    public static $ASSEMBLY_FILE_PORT_KEY = "assembly";
-    public static $DEFAULT_NAME = "Mono Execution";
-
-    private static $initialized = false;
-    private static $defaultInputPorts;
-    private static $defaultOutputPorts;
-
-    /**
-     * Static initializer.
-     */
-    public static function init()
-    {
-        if (!self::$initialized) {
-            self::$initialized = true;
-            self::$defaultInputPorts = array(
-                new Port((new PortMeta())->setName(self::$ARGS_PORT_KEY)->setType(VariableTypes::$STRING_ARRAY_TYPE)),
-                new Port((new PortMeta())->setName(self::$STDIN_FILE_PORT_KEY)->setType(VariableTypes::$FILE_TYPE)),
-                new Port(
-                    (new PortMeta())->setName(self::$INPUT_FILES_PORT_KEY)->setType(VariableTypes::$FILE_ARRAY_TYPE)
-                ),
-                new Port((new PortMeta())->setName(self::$ASSEMBLY_FILE_PORT_KEY)->setType(VariableTypes::$FILE_TYPE))
-            );
-            self::$defaultOutputPorts = array(
-                new Port((new PortMeta())->setName(self::$STDOUT_FILE_PORT_KEY)->setType(VariableTypes::$FILE_TYPE)),
-                new Port((new PortMeta())->setName(self::$OUTPUT_FILE_PORT_KEY)->setType(VariableTypes::$FILE_TYPE))
-            );
-        }
-    }
-
-    /**
-     * ElfExecutionBox constructor.
-     * @param BoxMeta $meta
-     */
-    public function __construct(BoxMeta $meta)
-    {
-        parent::__construct($meta);
-    }
-
-
-    /**
-     * Get type of this box.
-     * @return string
-     */
-    public function getType(): string
-    {
-        return self::$MONO_EXEC_TYPE;
-    }
-
-    /**
-     * Get default input ports for this box.
-     * @return array
-     */
-    public function getDefaultInputPorts(): array
-    {
-        self::init();
-        return self::$defaultInputPorts;
-    }
-
-    /**
-     * Get default output ports for this box.
-     * @return array
-     */
-    public function getDefaultOutputPorts(): array
-    {
-        self::init();
-        return self::$defaultOutputPorts;
-    }
-
-    /**
-     * Get default name of this box.
-     * @return string
-     */
-    public function getDefaultName(): string
-    {
-        return self::$DEFAULT_NAME;
-    }
-
-    /**
-     * Compile box into set of low-level tasks.
-     * @param CompilationParams $params
-     * @return array
-     * @throws ExerciseConfigException
-     */
-    public function compile(CompilationParams $params): array
-    {
-        $task = $this->compileBaseTask($params);
-        $task->setCommandBinary(self::$MONO_BINARY);
-
-        $args = [$this->getInputPortValue(self::$ASSEMBLY_FILE_PORT_KEY)->getValue(ConfigParams::$EVAL_DIR)];
-        if ($this->hasInputPortValue(self::$ARGS_PORT_KEY)) {
-            $args = array_merge($args, $this->getInputPortValue(self::$ARGS_PORT_KEY)->getValue());
-        }
-        $task->setCommandArguments($args);
-
-        return [$task];
-    }
-}