diff --git a/include/hsakmttypes.h b/include/hsakmttypes.h
index e9885398e5..ea4a1f4de5 100644
--- a/include/hsakmttypes.h
+++ b/include/hsakmttypes.h
@@ -493,7 +493,7 @@ typedef struct _HsaMemMapFlags
 						  // data from the memory, reduces latency
 						  // “cleanup hint” only, may be ignored
             unsigned int Reserved       : 23;
-        };
+        } ui32;
         HSAuint32 Value;
     };
 } HsaMemMapFlags;