diff --git a/lib/ultrajsondec.c b/lib/ultrajsondec.c
index 4b8281b..061cd04 100644
--- a/lib/ultrajsondec.c
+++ b/lib/ultrajsondec.c
@@ -60,7 +60,7 @@ struct DecoderState
   wchar_t *escEnd;
   int escHeap;
   int lastType;
-  JSUTF16 objDepth;
+  JSUINT32 objDepth;
   JSONObjectDecoder *dec;
 };