diff --git a/Modules/Compiler/GNU-DetermineCompiler.cmake b/Modules/Compiler/GNU-DetermineCompiler.cmake
index 261f148cd..6ddc56698 100644
--- a/Modules/Compiler/GNU-DetermineCompiler.cmake
+++ b/Modules/Compiler/GNU-DetermineCompiler.cmake
@@ -3,7 +3,9 @@ set(_compiler_id_pp_test "defined(__GNUC__)")
 
 set(_compiler_id_version_compute "
 # define @PREFIX@COMPILER_VERSION_MAJOR @MACRO_DEC@(__GNUC__)
-# define @PREFIX@COMPILER_VERSION_MINOR @MACRO_DEC@(__GNUC_MINOR__)
+# if defined(__GNUC_MINOR__)
+#  define @PREFIX@COMPILER_VERSION_MINOR @MACRO_DEC@(__GNUC_MINOR__)
+# endif
 # if defined(__GNUC_PATCHLEVEL__)
 #  define @PREFIX@COMPILER_VERSION_PATCH @MACRO_DEC@(__GNUC_PATCHLEVEL__)
 # endif")