diff --git a/reactos/tools/rbuild/backend/mingw/modulehandler.cpp b/reactos/tools/rbuild/backend/mingw/modulehandler.cpp
index a66dc08acef..460eaefb2c5 100644
--- a/reactos/tools/rbuild/backend/mingw/modulehandler.cpp
+++ b/reactos/tools/rbuild/backend/mingw/modulehandler.cpp
@@ -1971,12 +1971,13 @@ MingwModuleHandler::GenerateOtherMacros ()
 	}
 	else
 	{
-		globalCflags += " -nostdinc";
 		if ( module.cplusplus )
 		{
 			// HACK: use host headers when building C++
 			globalCflags += " $(HOST_CPPFLAGS)";
 		}
+		else
+			globalCflags += " -nostdinc";
 	}
 
 	// Always force disabling of sibling calls optimisation for GCC