diff --git a/modules/flann/include/opencv2/flann/dist.h b/modules/flann/include/opencv2/flann/dist.h
index b16ca394dd..30d6da7d9e 100644
--- a/modules/flann/include/opencv2/flann/dist.h
+++ b/modules/flann/include/opencv2/flann/dist.h
@@ -35,7 +35,7 @@
 #include <cstdlib>
 #include <string.h>
 #ifdef _MSC_VER
-typedef unsigned uint32_t;
+typedef unsigned __int32 uint32_t;
 typedef unsigned __int64 uint64_t;
 #else
 #include <stdint.h>