diff --git a/libs/main/thread/pithread.cpp b/libs/main/thread/pithread.cpp
index 0f9aa389..23070bba 100644
--- a/libs/main/thread/pithread.cpp
+++ b/libs/main/thread/pithread.cpp
@@ -1080,7 +1080,6 @@ bool PIThread::_waitForFinish(PISystemTime max_tm) {
 	if (!running_) return true;
 #ifdef WINDOWS
 	if (!isExists(PRIVATE->thread)) {
-		unlock();
 		return true;
 	}
 #endif