diff --git a/ospfd/ospf_lsa.c b/ospfd/ospf_lsa.c
index d2f593e..7c3be3d 100644
--- a/ospfd/ospf_lsa.c
+++ b/ospfd/ospf_lsa.c
@@ -2002,7 +2002,7 @@
   
   /* Sanity checks. */
   assert (type7 || type5);
-  if (!type7 || !type5)
+  if (!(type7 || type5))
     return NULL;
   if (type7)
     assert (type7->data);