diff --git a/mozilla/js/src/jsopcode.c b/mozilla/js/src/jsopcode.c
index 438cd06acb9..0cc84bb6004 100644
--- a/mozilla/js/src/jsopcode.c
+++ b/mozilla/js/src/jsopcode.c
@@ -2810,7 +2810,7 @@ Decompile(SprintStack *ss, jsbytecode *pc, intN nb)
                 xval = POP_STR();
                 lval = POP_STR();
                 sn = js_GetSrcNote(jp->script, pc);
-                if (sn && SN_TYPE(sn) == SRC_LABEL)
+                if (sn && SN_TYPE(sn) == SRC_INITPROP)
                     goto do_initprop;
                 todo = Sprint(&ss->sprinter, "%s%s%s",
                               lval,