diff --git a/unix.c b/unix.c
index a56c4c7..2d36605 100644
--- a/unix.c
+++ b/unix.c
@@ -639,7 +639,7 @@ lookup_external_name(char *name, long *location)
   strcpy(nm+1,name);
 #else
   strcpy(nm,name);
-#endif /*! HAVE_DLOPEN */
+#endif /*! USCORE */
 #if defined(HAVE_DLOPEN)
   return lookup_dlsym(nm, location);
 #elif defined(HAVE_NLIST)