diff --git a/Makefile b/Makefile
index 6f2cdf7..a64041b 100644
--- a/Makefile
+++ b/Makefile
@@ -5,9 +5,13 @@ all:
 clean:
 	./waf clean
 
+ifneq ($(FILTER),)
+  GTEST_FILTER := --gtest_filter=$(FILTER)
+endif
+
 .PHONY: test
 test:
 	./waf build --targets tests
-	./build/tests
+	./build/tests $(GTEST_FILTER)
 	@-rm -rf coverage
 	-gcovinator -b build -s src