diff --git a/build/top.mk b/build/top.mk
index 1be9becd84..544215c49e 100644
--- a/build/top.mk
+++ b/build/top.mk
@@ -109,7 +109,7 @@ SLAPD_LIBDEPEND = $(LDAP_LIBDEPEND) $(LDAP_LIBAVL_DEPEND) \
 # AutoConfig generated 
 AC_CC	= @CC@
 AC_CFLAGS = @CFLAGS@
-AC_DEFS = @CPPFLAGS@ @DEFS@
+AC_DEFS = @CPPFLAGS@ # @DEFS@
 AC_LDFLAGS = @LDFLAGS@
 AC_LIBS = @LIBS@