diff --git a/testing/Makefile b/testing/Makefile
index c5610fc97b..98c6b239a2 100644
--- a/testing/Makefile
+++ b/testing/Makefile
@@ -25,3 +25,4 @@ coverage:
 	@rm -f brocov.tmp.*
 	@cd coverage && make coverage
 
+.PHONY: coverage