diff --git a/ecmascript/mem/sparse_space.cpp b/ecmascript/mem/sparse_space.cpp
index d6b7029eb53b2176904469d9564bd003ad2ca118..fa453ae928b2f039c5c8998c2979648eacb60833 100644
--- a/ecmascript/mem/sparse_space.cpp
+++ b/ecmascript/mem/sparse_space.cpp
@@ -169,16 +169,17 @@ void SparseSpace::Sweep()
 
 bool SparseSpace::TryFillSweptRegion()
 {
-    if (sweptList_.empty()) {
+    Region *region = GetSweptRegionSafe();
+    if (region == nullptr) {
         return false;
     }
-    Region *region = nullptr;
-    while ((region = GetSweptRegionSafe()) != nullptr) {
+    do {
         allocator_->CollectFreeObjectSet(region);
         region->ResetSwept();
         region->MergeOldToNewRSetForCS();
         region->MergeLocalToShareRSetForCS();
-    }
+        region = GetSweptRegionSafe();
+    } while (region != nullptr);
     return true;
 }