diff --git a/2014/sinon/Makefile b/2014/sinon/Makefile
index af88aa7c7..e296f469f 100644
--- a/2014/sinon/Makefile
+++ b/2014/sinon/Makefile
@@ -202,7 +202,7 @@ clean:
 	fi
 
 clobber: clean
-	${RM} -f ${TARGET} ${ALT_TARGET}
+	${RM} -f ${TARGET} ${ALT_TARGET} run run.c
 	${RM} -rf *.dSYM
 	@-if [ -e sandwich ]; then \
 	    ${RM} -f sandwich; \