diff --git a/mesonbuild/ast/interpreter.py b/mesonbuild/ast/interpreter.py
index 8c73cb160da2..243f0be9436f 100644
--- a/mesonbuild/ast/interpreter.py
+++ b/mesonbuild/ast/interpreter.py
@@ -35,6 +35,7 @@
     IfClauseNode,
     IndexNode,
     MethodNode,
+    NotNode,
     OrNode,
     PlusAssignmentNode,
     StringNode,
@@ -235,6 +236,10 @@ def evaluate_orstatement(self, cur: OrNode) -> bool:
         self.evaluate_statement(cur.right)
         return False
 
+    def evaluate_notstatement(self, cur: NotNode) -> bool:
+        self.evaluate_statement(cur.value)
+        return False
+
     def evaluate_foreach(self, node: ForeachClauseNode) -> None:
         try:
             self.evaluate_codeblock(node.block)
diff --git a/test cases/unit/57 introspection/meson.build b/test cases/unit/57 introspection/meson.build
index a094a558c12f..9716eaeb7ab5 100644
--- a/test cases/unit/57 introspection/meson.build	
+++ b/test cases/unit/57 introspection/meson.build	
@@ -8,6 +8,7 @@ b1 = get_option('test_opt1')
 b2 = get_option('test_opt2')
 test_bool = b1 or b2
 test_bool = b1 and b2
+test_bool = not test_bool
 
 set_variable('list_test_plusassign', [])
 list_test_plusassign += ['bugs everywhere']