diff --git a/make/rules.mk b/make/rules.mk
index 463f3919..50597a20 100644
--- a/make/rules.mk
+++ b/make/rules.mk
@@ -80,7 +80,7 @@ prereqclean:
 	for dir in $(PREREQ_DIR); do make -$(MAKEFLAGS) -C $$dir clean; done
 
 profclean:
-	rm -f *.da *.bb *.bbg *.gcov
+	rm -f *.da *.bb *.bbg *.gcov *.gcda *.gcno
 
 timerclean:
 	rm -f timers_*.h