diff --git a/CMakeModules/Warnings.cmake b/CMakeModules/Warnings.cmake
index 2d2c3d88e7..aa654285b9 100644
--- a/CMakeModules/Warnings.cmake
+++ b/CMakeModules/Warnings.cmake
@@ -74,7 +74,7 @@ if( CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang" )
     endif()
 
 
-
+    # Error on variable length arrays (gcc extension)
     CHECK_CXX_COMPILER_FLAG( "-Wvla" COMPILER_SUPPORTS_WVLA )
 
     if( COMPILER_SUPPORTS_WVLA )