@@ -237,11 +237,11 @@
 		_startDiskNumber = [stream readLittleEndianInt16];
 		_internalAttributes = [stream readLittleEndianInt16];
 		_versionSpecificAttributes = [stream readLittleEndianInt32];
 		_localFileHeaderOffset = [stream readLittleEndianInt32];
 
-		encoding = (_generalPurposeBitFlag & (1 << 11)
+		encoding = (_generalPurposeBitFlag & (1u << 11)
 		    ? OF_STRING_ENCODING_UTF_8
 		    : OF_STRING_ENCODING_CODEPAGE_437);
 
 		_fileName = [[stream readStringWithLength: fileNameLength
 						 encoding: encoding] copy];