Index: iseq.c
===================================================================
--- iseq.c	(revision 26358)
+++ iseq.c	(working copy)
@@ -1008,14 +1008,10 @@
 {
     VALUE ret = Qnil;
     rb_iseq_t *iseq;
-    extern rb_iseq_t *rb_method_get_iseq(VALUE body);
 
     rb_secure(1);
 
-    if ((iseq = rb_method_get_iseq(body)) != 0) {
-	ret = rb_iseq_disasm(iseq->self);
-    }
-    else if (rb_obj_is_proc(body)) {
+    if (rb_obj_is_proc(body)) {
 	rb_proc_t *proc;
 	VALUE iseqval;
 	GetProcPtr(body, proc);
@@ -1024,7 +1020,14 @@
 	    ret = rb_iseq_disasm(iseqval);
 	}
     }
+    else {
+       extern rb_iseq_t *rb_method_get_iseq(VALUE body);
 
+       if ((iseq = rb_method_get_iseq(body)) != 0) {
+	ret = rb_iseq_disasm(iseq->self);
+      }
+    }
+
     return ret;
 }