diff --git a/docs/yocto/all-targets.md b/docs/yocto/all-targets.md
index 5da9228..e90d650 100644
--- a/docs/yocto/all-targets.md
+++ b/docs/yocto/all-targets.md
@@ -72,5 +72,5 @@ To test on specific boards, see the following list:
 
 To clean build:
 ```
-rm -rf project/yocto/build/{sstate-cache,tmp}
+rm -rf project/yocto/build/{sstate-cache,tmp,cache,downloads,tmp-*}
 ```