diff --git a/.github/workflows/docker.yaml b/.github/workflows/docker.yaml
index f2393e6d..83faeb60 100644
--- a/.github/workflows/docker.yaml
+++ b/.github/workflows/docker.yaml
@@ -19,4 +19,4 @@ jobs:
         run: |
           cd ./_example/simple
           docker build -t simple .
-          docker run simple | grep 99\ こんにちわ世界099
+          docker run simple | grep 99\ こんにちは世界099