diff --git a/utils.pas b/utils.pas
index adba8523..ed9da703 100644
--- a/utils.pas
+++ b/utils.pas
@@ -586,7 +586,7 @@ function Base32Decode(const s: ansistring): ansistring;
   optr, len, bcnt: integer;
   Output: PByteArray;
   Input: PAnsiChar;
-  w: word;
+  w: qword;
   c: ansichar;
   b: byte;
 begin