diff --git a/dlls/oleaut32/vartype.c b/dlls/oleaut32/vartype.c
index df70e905a6f..e08a7c04736 100644
--- a/dlls/oleaut32/vartype.c
+++ b/dlls/oleaut32/vartype.c
@@ -7053,7 +7053,7 @@ HRESULT WINAPI VarDateFromStr(OLECHAR* strIn, LCID lcid, ULONG dwFlags, DATE* pd
     1,2,3,4,5,6,7,8,9,10,11,12,13,
     1,2,3,4,5,6,7,8,9,10,11,12,13
   };
-  size_t i;
+  unsigned int i;
   BSTR tokens[sizeof(ParseDateTokens)/sizeof(ParseDateTokens[0])];
   DATEPARSE dp;
   DWORD dwDateSeps = 0, iDate = 0;