diff --git a/src/main/grammars/FeakinParser.bnf b/src/main/grammars/FeakinParser.bnf
index e7a79ae..0e5a896 100644
--- a/src/main/grammars/FeakinParser.bnf
+++ b/src/main/grammars/FeakinParser.bnf
@@ -200,10 +200,13 @@ flowDeclaration ::= FLOW_KEYWORD flowBody
 
 flowBody ::= LBRACE stepDeclaration* RBRACE
 
-private stepDeclaration ::= viaMethodDeclaration
-                     | viaMessageDeclaration
+private stepDeclaration ::= VIA_KEYWORD objectName ((DOUBLE_COLON | DOT) viaMethodName parameters?)? (viaMethodDeclaration | viaMessageDeclaration)
 
-viaMethodDeclaration ::= VIA_KEYWORD objectName ((DOUBLE_COLON | DOT) viaMethodName parameters?)? (RECEIVE_KEYWORD receiveObject)? SEMICOLON?
+viaMethodDeclaration ::= RECEIVE_KEYWORD receiveObject SEMICOLON?
+
+viaMessageDeclaration ::= SEND_KEYWORD passObject TO_KEYWORD topic SEMICOLON?
+
+private passObject ::= objectName
 
 parameters ::= LPAREN (parameter (COMMA parameter)*)? RPAREN
 
@@ -213,10 +216,6 @@ paramType ::= IDENTIFIER ('<' IDENTIFIER '>')?;
 
 private receiveObject ::= objectName (COLON viaMethodName)?
 
-viaMessageDeclaration ::= VIA_KEYWORD objectName ((DOUBLE_COLON | DOT) viaMethodName parameters?)?  SEND_KEYWORD passObject TO_KEYWORD topic SEMICOLON?
-
-private passObject ::= objectName
-
 layeredDeclaration ::= LAYERED_KEYWORD IDENTIFIER layeredBody
 
 layeredBody ::= LBRACE  dependency? layerDeclaration* RBRACE
diff --git a/src/main/kotlin/com/feakin/intellij/linemarkers/FkLayeredLineMarkerContributor.kt b/src/main/kotlin/com/feakin/intellij/linemarkers/FkLayeredLineMarkerContributor.kt
new file mode 100644
index 0000000..62c4140
--- /dev/null
+++ b/src/main/kotlin/com/feakin/intellij/linemarkers/FkLayeredLineMarkerContributor.kt
@@ -0,0 +1,25 @@
+package com.feakin.intellij.linemarkers
+
+import com.feakin.intellij.FkIcons
+import com.feakin.intellij.psi.FkLayeredDeclaration
+import com.intellij.codeInsight.daemon.LineMarkerInfo
+import com.intellij.codeInsight.daemon.LineMarkerProvider
+import com.intellij.openapi.editor.markup.GutterIconRenderer
+import com.intellij.psi.PsiElement
+import java.awt.event.MouseEvent
+
+class FkLayeredLineMarkerContributor : LineMarkerProvider {
+    override fun getLineMarkerInfo(element: PsiElement): LineMarkerInfo<PsiElement>? {
+        if (element !is FkLayeredDeclaration) return null
+
+        return LineMarkerInfo(
+            element,
+            element.textRange,
+            FkIcons.FILE,
+            { "Layered Line Marker" },
+            { _: MouseEvent?, _: PsiElement? -> run {} },
+            GutterIconRenderer.Alignment.LEFT,
+            { "Message Queue" }
+        )
+    }
+}
\ No newline at end of file
diff --git a/src/main/resources/META-INF/plugin.xml b/src/main/resources/META-INF/plugin.xml
index 0801e19..e18c4bc 100644
--- a/src/main/resources/META-INF/plugin.xml
+++ b/src/main/resources/META-INF/plugin.xml
@@ -57,6 +57,8 @@
                                         implementationClass="com.feakin.intellij.linemarkers.FkImplMessageProvider"/>
         <codeInsight.lineMarkerProvider language="Feakin"
                                         implementationClass="com.feakin.intellij.linemarkers.FkImplMethodProvider"/>
+        <codeInsight.lineMarkerProvider language="Feakin"
+                                        implementationClass="com.feakin.intellij.linemarkers.FkLayeredLineMarkerContributor"/>
 
         <runLineMarkerContributor language="Feakin"
                                   implementationClass="com.feakin.intellij.linemarkers.FkImplLineMarkerContributor"/>
diff --git a/src/test/testData/parser/ImplFlow.txt b/src/test/testData/parser/ImplFlow.txt
index b7c5814..bce163c 100644
--- a/src/test/testData/parser/ImplFlow.txt
+++ b/src/test/testData/parser/ImplFlow.txt
@@ -53,15 +53,15 @@ Feakin
             PsiWhiteSpace('\n    ')
             PsiComment(FeakinTokenType.COMMENT)('//')
             PsiWhiteSpace('\n    ')
+            PsiElement(FeakinTokenType.via)('via')
+            PsiWhiteSpace(' ')
+            FkObjectNameImpl(OBJECT_NAME)
+              PsiElement(FeakinTokenType.IDENTIFIER)('UserRepository')
+            PsiElement(FeakinTokenType.::)('::')
+            FkViaMethodNameImpl(VIA_METHOD_NAME)
+              PsiElement(FeakinTokenType.IDENTIFIER)('getUserById')
+            PsiWhiteSpace(' ')
             FkViaMethodDeclarationImpl(VIA_METHOD_DECLARATION)
-              PsiElement(FeakinTokenType.via)('via')
-              PsiWhiteSpace(' ')
-              FkObjectNameImpl(OBJECT_NAME)
-                PsiElement(FeakinTokenType.IDENTIFIER)('UserRepository')
-              PsiElement(FeakinTokenType.::)('::')
-              FkViaMethodNameImpl(VIA_METHOD_NAME)
-                PsiElement(FeakinTokenType.IDENTIFIER)('getUserById')
-              PsiWhiteSpace(' ')
               PsiElement(FeakinTokenType.receive)('receive')
               PsiWhiteSpace(' ')
               FkObjectNameImpl(OBJECT_NAME)
@@ -73,24 +73,24 @@ Feakin
             PsiWhiteSpace('\n    ')
             PsiComment(FeakinTokenType.COMMENT)('//')
             PsiWhiteSpace('\n    ')
+            PsiElement(FeakinTokenType.via)('via')
+            PsiWhiteSpace(' ')
+            FkObjectNameImpl(OBJECT_NAME)
+              PsiElement(FeakinTokenType.IDENTIFIER)('UserRepository')
+            PsiElement(FeakinTokenType.::)('::')
+            FkViaMethodNameImpl(VIA_METHOD_NAME)
+              PsiElement(FeakinTokenType.IDENTIFIER)('save')
+            FkParametersImpl(PARAMETERS)
+              PsiElement(FeakinTokenType.()('(')
+              FkParameterImpl(PARAMETER)
+                PsiElement(FeakinTokenType.IDENTIFIER)('user')
+                PsiElement(FeakinTokenType.:)(':')
+                PsiWhiteSpace(' ')
+                FkParamTypeImpl(PARAM_TYPE)
+                  PsiElement(FeakinTokenType.IDENTIFIER)('User')
+              PsiElement(FeakinTokenType.))(')')
+            PsiWhiteSpace(' ')
             FkViaMethodDeclarationImpl(VIA_METHOD_DECLARATION)
-              PsiElement(FeakinTokenType.via)('via')
-              PsiWhiteSpace(' ')
-              FkObjectNameImpl(OBJECT_NAME)
-                PsiElement(FeakinTokenType.IDENTIFIER)('UserRepository')
-              PsiElement(FeakinTokenType.::)('::')
-              FkViaMethodNameImpl(VIA_METHOD_NAME)
-                PsiElement(FeakinTokenType.IDENTIFIER)('save')
-              FkParametersImpl(PARAMETERS)
-                PsiElement(FeakinTokenType.()('(')
-                FkParameterImpl(PARAMETER)
-                  PsiElement(FeakinTokenType.IDENTIFIER)('user')
-                  PsiElement(FeakinTokenType.:)(':')
-                  PsiWhiteSpace(' ')
-                  FkParamTypeImpl(PARAM_TYPE)
-                    PsiElement(FeakinTokenType.IDENTIFIER)('User')
-                PsiElement(FeakinTokenType.))(')')
-              PsiWhiteSpace(' ')
               PsiElement(FeakinTokenType.receive)('receive')
               PsiWhiteSpace(' ')
               FkObjectNameImpl(OBJECT_NAME)
@@ -103,12 +103,12 @@ Feakin
             PsiWhiteSpace('\n    ')
             PsiComment(FeakinTokenType.COMMENT)('//')
             PsiWhiteSpace('\n    ')
+            PsiElement(FeakinTokenType.via)('via')
+            PsiWhiteSpace(' ')
+            FkObjectNameImpl(OBJECT_NAME)
+              PsiElement(FeakinTokenType.IDENTIFIER)('MessageQueue')
+            PsiWhiteSpace(' ')
             FkViaMessageDeclarationImpl(VIA_MESSAGE_DECLARATION)
-              PsiElement(FeakinTokenType.via)('via')
-              PsiWhiteSpace(' ')
-              FkObjectNameImpl(OBJECT_NAME)
-                PsiElement(FeakinTokenType.IDENTIFIER)('MessageQueue')
-              PsiWhiteSpace(' ')
               PsiElement(FeakinTokenType.send)('send')
               PsiWhiteSpace(' ')
               FkObjectNameImpl(OBJECT_NAME)