diff --git a/cMake/FreeCAD_Helpers/CompilerChecksAndSetups.cmake b/cMake/FreeCAD_Helpers/CompilerChecksAndSetups.cmake
index c67ecce528..63c471ab33 100644
--- a/cMake/FreeCAD_Helpers/CompilerChecksAndSetups.cmake
+++ b/cMake/FreeCAD_Helpers/CompilerChecksAndSetups.cmake
@@ -3,7 +3,6 @@
 # https://cmake.org/cmake/help/v3.8/manual/cmake-compile-features.7.html
 
 macro(CompilerChecksAndSetups)
-	set(CMAKE_CXX_FLAGS "/showIncludes ${CMAKE_CXX_FLAGS}")
     if (${CMAKE_CXX_COMPILER_ID} MATCHES "Clang")
         set(CMAKE_COMPILER_IS_CLANGXX TRUE)
     endif (${CMAKE_CXX_COMPILER_ID} MATCHES "Clang")