diff --git a/Makefile b/Makefile
index 524d6a9..0162277 100644
--- a/Makefile
+++ b/Makefile
@@ -13,6 +13,9 @@ default:
 	cp src/libkeepalive.so libkeepalive.so
 	strip -s libkeepalive.so
 
+test: default
+	make -C test/ runtest
+
 clean:
 	make -C src/ clean
 	make -C test/ clean
diff --git a/test/Makefile b/test/Makefile
index 2a0f6e2..6baf822 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -11,5 +11,11 @@ CC=gcc
 
 default: test
 
+TENV = LD_PRELOAD=../libkeepalive.so SELFTEST=on
+runtest:
+	${TENV} KEEPALIVE=off ./test
+	${TENV} KEEPCNT=13 KEEPIDLE=23 KEEPINTVL=42 ./test
+	${TENV} KEEPCNT=42 KEEPIDLE=13 KEEPINTVL=23 ./test
+
 clean:
 	rm -f test