diff --git a/build/top.mk b/build/top.mk
index fbe6d41324..2cdd701830 100644
--- a/build/top.mk
+++ b/build/top.mk
@@ -190,8 +190,7 @@ SLURPD_LIBS = @SLURPD_LIBS@
 # Our Defaults
 CC = $(AC_CC)
 DEFS = $(LDAP_INCPATH) $(XINCPATH) $(XDEFS) $(AC_DEFS) $(DEFINES)
-CFLAGS = $(AC_CFLAGS)
-CPPFLAGS = $(DEFS)
+CFLAGS = $(AC_CFLAGS) $(DEFS)
 LDFLAGS = $(LDAP_LIBPATH) $(AC_LDFLAGS) $(XLDFLAGS)
 LIBS = $(XLIBS) $(XXLIBS) $(AC_LIBS) $(XXXLIBS)