diff --git a/src/Makefile.am b/src/Makefile.am
index 1e7b905977..4dbf7b1de5 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1222,6 +1222,7 @@ endif
 libvirt_net_rpc_la_CFLAGS = \
 			$(GNUTLS_CFLAGS) \
 			$(SASL_CFLAGS) \
+			$(XDR_CFLAGS) \
 			$(AM_CFLAGS)
 libvirt_net_rpc_la_LDFLAGS = \
 			$(GNUTLS_LIBS) \