diff --git a/source/common/filesystem/include/resourcefile.h b/source/common/filesystem/include/resourcefile.h
index 7940e90e1..a23914444 100644
--- a/source/common/filesystem/include/resourcefile.h
+++ b/source/common/filesystem/include/resourcefile.h
@@ -177,7 +177,7 @@ public:
 
 	int GetEntryNamespace(uint32_t entry)
 	{
-		return (entry < NumLumps) ? Entries[entry].Namespace : ns_hidden;
+		return (entry < NumLumps) ? Entries[entry].Namespace : (int)ns_hidden;
 	}
 
 	int GetEntryResourceID(uint32_t entry)