diff --git a/kerberos5/lib/libheimipcc/Makefile b/kerberos5/lib/libheimipcc/Makefile
index adb8f579c53..63af7ba4172 100644
--- a/kerberos5/lib/libheimipcc/Makefile
+++ b/kerberos5/lib/libheimipcc/Makefile
@@ -12,7 +12,8 @@ SRCS=	\
 CFLAGS+=	-DPIC ${PICFLAG}
 CFLAGS+=	-I${KRB5DIR}/lib/roken \
 		-I${KRB5DIR}/base \
-		-I${KRB5DIR}/lib/ipc
+		-I${KRB5DIR}/lib/ipc \
+		-I${KRB5DIR}/include
 
 .include <bsd.lib.mk>