diff --git a/bin/nsupdate/Makefile.in b/bin/nsupdate/Makefile.in
index 16a0c44da7..8c2f8b0712 100644
--- a/bin/nsupdate/Makefile.in
+++ b/bin/nsupdate/Makefile.in
@@ -25,9 +25,11 @@ top_srcdir =	@top_srcdir@
 
 READLINE_LIB = @READLINE_LIB@
 
+DST_GSSAPI_INC = @DST_GSSAPI_INC@
+
 CINCLUDES =	${LWRES_INCLUDES} ${DNS_INCLUDES} ${BIND9_INCLUDES} \
 		${ISC_INCLUDES} ${ISCCFG_INCLUDES} ${ISCPK11_INCLUDES} \
-		@DST_GSSAPI_INC@
+		${DST_GSSAPI_INC}
 
 CDEFINES =	@USE_GSSAPI@
 CWARNINGS =