diff --git a/Makefile b/Makefile
index 6491f64fef8c167fef633ad2d46b8081b9607a21..b3099bb10486a7d97406c4db3e70c04a0396d16a 100644
--- a/Makefile
+++ b/Makefile
@@ -24,5 +24,7 @@ clean:
 	$(RM) test/schema/*.rnc
 	$(RM) test/schema/*.rng
 	$(RM) test/schema/*.sch
+	$(RM) test/schema/*-compiled.xspec
+	$(RM) -r test/scheme/xspec
 
 copy-schema: test/schema/common.rnc test/schema/vocab.rnc