diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -237,7 +237,6 @@
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-common -Wextra")
 
   if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
-    set(IS_GNU 1)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wlogical-op")
   endif()
 
diff --git a/config-kmymoney.h.cmake b/config-kmymoney.h.cmake
--- a/config-kmymoney.h.cmake
+++ b/config-kmymoney.h.cmake
@@ -23,6 +23,4 @@
 
 #cmakedefine ENABLE_WEBENGINE 1
 
-#cmakedefine IS_GNU 1
-
 #cmakedefine ENABLE_UNFINISHEDFEATURES 1
diff --git a/kmymoney/mymoney/mymoneytracer.h b/kmymoney/mymoney/mymoneytracer.h
--- a/kmymoney/mymoney/mymoneytracer.h
+++ b/kmymoney/mymoney/mymoneytracer.h
@@ -24,12 +24,11 @@
 #ifndef MYMONEYTRACER_H
 #define MYMONEYTRACER_H
 
-#include <config-kmymoney.h>
 #include "kmm_mymoney_export.h"
 
 #include "qglobal.h"
 
-#ifdef IS_GNU
+#ifdef __GNUC__
 #  define KMM_PRINTF_FORMAT(x, y) __attribute__((format(__printf__, x, y)))
 #else
 #  define KMM_PRINTF_FORMAT(x, y) /*NOTHING*/