diff --git a/tools/perf/.gitignore b/tools/perf/.gitignore
index 416684be0ad308a6df2a69d22f41409de05f7466..26b823b61aa175f2f0d8a475e6574a8615ae0e32 100644
--- a/tools/perf/.gitignore
+++ b/tools/perf/.gitignore
@@ -19,3 +19,5 @@ TAGS
 cscope*
 config.mak
 config.mak.autogen
+*-bison.*
+*-flex.*