diff --git a/Makefile b/Makefile
index 78e1807..a59d008 100644
--- a/Makefile
+++ b/Makefile
@@ -2,3 +2,6 @@ all: tests/tests
 
 tests/tests: tests/test.m src/XMPPConnection.m src/XMPPStanza.m
 	objfw-compile -o $@ $^ -lidn -Wall -Werror -Isrc
+
+clean:
+	rm -f src/*.o tests/*.o tests/tests