diff --git a/tools/kconfig/.gitignore b/tools/kconfig/.gitignore
index 9e8c24333..30d8d4578 100644
--- a/tools/kconfig/.gitignore
+++ b/tools/kconfig/.gitignore
@@ -11,6 +11,7 @@ zconf.hash.c
 gconf.glade.h
 *.pot
 *.mo
+*.o
 
 #
 # configuration programs