diff --git a/1989/fubar/Makefile b/1989/fubar/Makefile
index 841846c9b..9a71db48b 100644
--- a/1989/fubar/Makefile
+++ b/1989/fubar/Makefile
@@ -205,7 +205,7 @@ clean:
 clobber: clean
 	${RM} -f ${TARGET} ${ALT_TARGET}
 	${RM} -rf *.dSYM
-	${RM} -f ouroboros.c
+	${RM} -f ouroboros.c x x1
 	@-if [ -e sandwich ]; then \
 	    ${RM} -f sandwich; \
 	    echo 'ate sandwich'; \