diff --git a/Makefile b/Makefile
index 883801fe..eb2c335a 100644
--- a/Makefile
+++ b/Makefile
@@ -290,7 +290,7 @@ ifneq ($(GIT_VERSION),)
 	Q3MAP_VERSION := $(Q3MAP_VERSION)-git-$(GIT_VERSION)
 endif
 
-CPPFLAGS += -DRADIANT_VERSION="\"$(RADIANT_VERSION)\"" -DRADIANT_MAJOR_VERSION="\"$(RADIANT_MAJOR_VERSION)\"" -DRADIANT_MINOR_VERSION="\"$(RADIANT_MINOR_VERSION)\"" -DRADIANT_ABOUTMSG="\"$(RADIANT_ABOUTMSG)\"" -DQ3MAP_VERSION="\"$(Q3MAP_VERSION)\"" -DRADIANT_EXECUTABLE="\"$(RADIANT_EXECUTABLE)\""
+CPPFLAGS_COMMON += -DRADIANT_VERSION="\"$(RADIANT_VERSION)\"" -DRADIANT_MAJOR_VERSION="\"$(RADIANT_MAJOR_VERSION)\"" -DRADIANT_MINOR_VERSION="\"$(RADIANT_MINOR_VERSION)\"" -DRADIANT_ABOUTMSG="\"$(RADIANT_ABOUTMSG)\"" -DQ3MAP_VERSION="\"$(Q3MAP_VERSION)\"" -DRADIANT_EXECUTABLE="\"$(RADIANT_EXECUTABLE)\""
 
 .PHONY: all
 all: \