diff --git a/builddefs/build_keyboard.mk b/builddefs/build_keyboard.mk
index def0be69b67d..7a5412ccd2be 100644
--- a/builddefs/build_keyboard.mk
+++ b/builddefs/build_keyboard.mk
@@ -46,11 +46,12 @@ ifdef SKIP_VERSION
 endif
 
 # Generate the version.h file
+VERSION_H_FLAGS :=
 ifdef SKIP_VERSION
-VERSION_H_FLAGS := --skip-all
+VERSION_H_FLAGS += --skip-all
 endif
 ifdef SKIP_GIT
-VERSION_H_FLAGS := --skip-git
+VERSION_H_FLAGS += --skip-git
 endif
 
 # Generate the board's version.h file.