@@ -106,12 +106,12 @@
 
 	TEST(@"-[lower]", R([s[0] lower]) && [s[0] isEqual: @"3𝄞1€sät"] &&
 	    R([s[1] lower]) && [s[1] isEqual: @"abc"])
 
 	TEST(@"+[stringWithCString:length:]",
-	    (s[0] = [OFMutableString stringWithCString: "foobar"
-					      length: 3]) &&
+	    (s[0] = [OFMutableString stringWithCString: "\xEF\xBB\xBF" "foobar"
+					      length: 6]) &&
 	    [s[0] isEqual: @"foo"])
 
 	TEST(@"+[stringWithContentsOfFile:encoding]", (s[1] = [OFString
 	    stringWithContentsOfFile: @"testfile.txt"
 			    encoding: OF_STRING_ENCODING_ISO_8859_1]) &&