diff --git a/src/OpenThreads/win32/Win32Thread.cpp b/src/OpenThreads/win32/Win32Thread.cpp
index 253c41cf5..c80e1cb3b 100644
--- a/src/OpenThreads/win32/Win32Thread.cpp
+++ b/src/OpenThreads/win32/Win32Thread.cpp
@@ -345,13 +345,13 @@ int Thread::start() {
 
     pd->uniqueId = (int)ID;
 
-    // wait till the thread has actually started.
-    pd->threadStartedBlock.block();
-
     if(!pd->tid) {
         return -1;
     }
 
+    // wait till the thread has actually started.
+    pd->threadStartedBlock.block();
+
     return 0;
 
 }