diff --git a/common_thread.h b/common_thread.h
index 2dcc348f2..ad386a440 100644
--- a/common_thread.h
+++ b/common_thread.h
@@ -103,7 +103,7 @@ typedef struct blas_queue {
 
   struct blas_queue *next;
 
-#if defined( __WIN32__) || defined(__CYGWIN32__) || defined(_WIN32)
+#if defined( __WIN32__) || defined(__CYGWIN32__) || defined(_WIN32) || defined(__CYGWIN__)
   CRITICAL_SECTION lock;
   HANDLE finish;
 #else