1 files changed, 2 insertions, 1 deletions

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 32912af430f0..35655c3a7b7a 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -987,7 +987,8 @@ clean:
         $(RM) *.spec *.pyc *.pyo */*.pyc */*.pyo $(OUTPUT)common-cmds.h TAGS tags cscope*
         $(MAKE) -C Documentation/ clean
         $(RM) $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)PERF-CFLAGS
-        $(RM) $(OUTPUT)util/*-{bison,flex}*
+        $(RM) $(OUTPUT)util/*-bison*
+        $(RM) $(OUTPUT)util/*-flex*
         $(python-clean)
 
 .PHONY: all install clean strip $(LIBTRACEEVENT)