@@ -47,21 +47,21 @@
 - (long long)longLongValue
 {
 	return self.stringValue.longLongValue;
 }
 
-- (long long)longLongValueWithBase: (int)base
+- (long long)longLongValueWithBase: (unsigned char)base
 {
 	return [self.stringValue longLongValueWithBase: base];
 }
 
 - (unsigned long long)unsignedLongLongValue
 {
 	return self.stringValue.unsignedLongLongValue;
 }
 
-- (unsigned long long)unsignedLongLongValueWithBase: (int)base
+- (unsigned long long)unsignedLongLongValueWithBase: (unsigned char)base
 {
 	return [self.stringValue unsignedLongLongValueWithBase: base];
 }
 
 - (float)floatValue