diff --git a/.azure-pipelines/template-clean-sonic-slave.yml b/.azure-pipelines/template-clean-sonic-slave.yml
index cc995e9c2621..c67f63fff476 100644
--- a/.azure-pipelines/template-clean-sonic-slave.yml
+++ b/.azure-pipelines/template-clean-sonic-slave.yml
@@ -1,7 +1,7 @@
 steps:
 - script: |
     containers=$(docker container ls -a | grep "sonic-slave" | awk '{ print $1 }')
-    [ -n "$containers" ] && docker container rm -f containers
+    [ -n "$containers" ] && docker container rm -f $containers
     docker images | grep "^<none>" | awk '{print$3}' | xargs -i docker rmi {}
     images=$(docker images 'sonic-slave-*' -a -q)
     [ -n "$images" ] && docker rmi -f $images