@@ -210,11 +210,11 @@
 	TEST(@"-[hash:]", URI1.hash == URI4.hash && URI2.hash != URI3.hash)
 
 	EXPECT_EXCEPTION(@"Detection of invalid format",
 	    OFInvalidFormatException, [OFURI URIWithString: @"http"])
 
-	mutableURI = [OFMutableURI URI];
+	mutableURI = [OFMutableURI URIWithScheme: @"dummy"];
 
 	EXPECT_EXCEPTION(
 	    @"-[setPercentEncodedScheme:] with invalid characters fails",
 	    OFInvalidFormatException, mutableURI.scheme = @"%20")