diff --git a/Objects/dictobject.c b/Objects/dictobject.c
index 7910cb6..f5e5320 100644
--- a/Objects/dictobject.c
+++ b/Objects/dictobject.c
@@ -1149,7 +1149,7 @@
 			PyErr_Format(PyExc_ValueError,
 				     "dictionary update sequence element #%d "
 				     "has length %zd; 2 is required",
-				     i, (long)n);
+				     i, n);
 			goto Fail;
 		}