diff --git a/Makefile b/Makefile
index 0b3cecd..1e095f0 100644
--- a/Makefile
+++ b/Makefile
@@ -31,6 +31,7 @@ st: $(OBJ)
 
 clean:
 	rm -f st $(OBJ) st-$(VERSION).tar.gz
+	rm -f config.h
 
 dist: clean
 	mkdir -p st-$(VERSION)