diff --git a/staging/src/k8s.io/kubectl/pkg/cmd/completion/completion.go b/staging/src/k8s.io/kubectl/pkg/cmd/completion/completion.go
index 1acbdb8e730..106cd0d26a2 100644
--- a/staging/src/k8s.io/kubectl/pkg/cmd/completion/completion.go
+++ b/staging/src/k8s.io/kubectl/pkg/cmd/completion/completion.go
@@ -275,7 +275,7 @@ autoload -U +X bashcompinit && bashcompinit
 # use word boundary patterns for BSD or GNU sed
 LWORD='[[:<:]]'
 RWORD='[[:>:]]'
-if sed --help 2>&1 | grep -q GNU; then
+if sed --help 2>&1 | grep -q 'GNU\|BusyBox'; then
 	LWORD='\<'
 	RWORD='\>'
 fi