diff --git a/make/rules.mk b/make/rules.mk
index c70f36b0..463f3919 100644
--- a/make/rules.mk
+++ b/make/rules.mk
@@ -9,7 +9,7 @@ install: all
 clean:
 distclean: clean
 
-.PHONY: all install clean distclean
+.PHONY: all install clean distclean %.this
 
 # -- phony targets