1 files changed, 1 insertions, 1 deletions
diff --git a/js/src/gc/PublicIterators.h b/js/src/gc/PublicIterators.h
index d1072cfe98..7ef6271f63 100644
--- a/js/src/gc/PublicIterators.h
+++ b/js/src/gc/PublicIterators.h
@@ -35,7 +35,7 @@ class ZonesIter {
  public:
   ZonesIter(gc::GCRuntime* gc, ZoneSelector selector)
       : iterMarker(gc), it(gc->zones().begin()), end(gc->zones().end()) {
-    if (selector == SkipAtoms) {
+    if (selector == SkipAtoms && !done()) {
       MOZ_ASSERT(get()->isAtomsZone());
       next();
     }