diff --git a/Makefile b/Makefile
index 4db3ffc..5d87ee0 100644
--- a/Makefile
+++ b/Makefile
@@ -9,6 +9,8 @@ all: $(EXERCISES)
 
 clean:
 	rm -f $(EXERCISES)
+	rm -f ex19
+	rm -f object.o
 
 
 .PHONY: all clean