diff --git a/es2panda/aot/emitFiles.cpp b/es2panda/aot/emitFiles.cpp
index 9cf757083ad48cd11ae87f688dbff2e1ff6b02f6..2066486b77ed1c7db718b60ab0860330748bf80b 100644
--- a/es2panda/aot/emitFiles.cpp
+++ b/es2panda/aot/emitFiles.cpp
@@ -29,8 +29,6 @@ void EmitFileQueue::Schedule()
     if (mergeAbc_) {
         // generate merged abc
         auto emitMergedAbcJob = new EmitMergedAbcJob(options_->CompilerOutput(), progsInfo_);
-        jobs_.push_back(emitMergedAbcJob);
-        jobsCount_++;
         for (const auto &info: progsInfo_) {
             // generate cache protoBins and set dependencies
             if (!info.second->needUpdateCache) {
@@ -44,6 +42,9 @@ void EmitFileQueue::Schedule()
                 jobsCount_++;
             }
         }
+        //  One job should be placed after those jobs which depend on it to prevent blocking
+        jobs_.push_back(emitMergedAbcJob);
+        jobsCount_++;
     } else {
         for (const auto &info: progsInfo_) {
             try {
diff --git a/es2panda/util/workerQueue.cpp b/es2panda/util/workerQueue.cpp
index 24061b69a15dc3e727d80fe4a0f0e622ae68ebd3..f86f1e130eec1468a5c5fd13e1c6af6790a583fa 100644
--- a/es2panda/util/workerQueue.cpp
+++ b/es2panda/util/workerQueue.cpp
@@ -79,8 +79,8 @@ void WorkerQueue::Consume()
     activeWorkers_++;
 
     while (jobsCount_ > 0) {
-        auto &job = *(jobs_[jobs_.size() - jobsCount_]);
-        jobsCount_--;
+        --jobsCount_;
+        auto &job = *(jobs_[jobsCount_]);
 
         lock.unlock();