--- src/Variant.c	2003-03-26 02:47:51.000000000 +0100
+++ src/Variant.c	2008-05-13 12:59:30.000000000 +0200
@@ -158,7 +158,7 @@
 				{
 					memset(value, 0, sizeof(VARIANT_VALUE));
 
-					value->binary = _variantBase64Decode(string, strlen(string), &value->length);
+					value->binary = _variantBase64Decode((const unsigned char *)string, strlen(string), &value->length);
 				}
 				return value;
 			}