diff --git a/Modules/dlmodule.c b/Modules/dlmodule.c
index 971b06f..b7cd35b 100644
--- a/Modules/dlmodule.c
+++ b/Modules/dlmodule.c
@@ -70,7 +70,8 @@
 dl_call(dlobject *xp, PyObject *args)
 {
 	PyObject *name;
-	long (*func)();
+	long (*func)(long, long, long, long, long,
+                     long, long, long, long, long);
 	long alist[10];
 	long res;
 	int i;