diff --git a/src/platform/mac/macplatformwindow.mm b/src/platform/mac/macplatformwindow.mm
index 64a673d8a..0441514b2 100644
--- a/src/platform/mac/macplatformwindow.mm
+++ b/src/platform/mac/macplatformwindow.mm
@@ -146,7 +146,7 @@ QString getTitleFromWid(long int wid) {
             return title;
         }
 
-        uint32_t windowid[1] = {wid};
+        uint32_t windowid[1] = {static_cast<uint32_t>(wid)};
         CFArrayRef windowArray = CFArrayCreate ( NULL, (const void **)windowid, 1 ,NULL);
         NSArray *array = (__bridge NSArray*) CGWindowListCreateDescriptionFromArray(windowArray);