config.mk | 4 ++--

diff --git a/config.mk b/config.mk
index 64a1da92c7b5d4a45d7e6b47dad1a083af683751..5059632c0da6d75b134cca69253cc77750fbf37c 100644
--- a/config.mk
+++ b/config.mk
@@ -21,8 +21,8 @@        `$(PKG_CONFIG) --libs fontconfig` \
        `$(PKG_CONFIG) --libs freetype2`
 
 # flags
-CPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600
-STCFLAGS = $(INCS) $(CPPFLAGS) $(CFLAGS)
+STCPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600
+STCFLAGS = $(INCS) $(STCPPFLAGS) $(CPPFLAGS) $(CFLAGS)
 STLDFLAGS = $(LIBS) $(LDFLAGS)
 
 # OpenBSD: