diff --git a/Contractor/EdgeBasedGraphFactory.h b/Contractor/EdgeBasedGraphFactory.h
index a2653f69e..e964479a2 100644
--- a/Contractor/EdgeBasedGraphFactory.h
+++ b/Contractor/EdgeBasedGraphFactory.h
@@ -86,7 +86,7 @@ public:
         int lat2;
         int lon1;
         int lon2:31;
-        bool belongsToTinyComponent;
+        bool belongsToTinyComponent:1;
         NodeID nameID;
         unsigned weight:31;
         bool ignoreInGrid:1;