diff --git a/docker/Dockerfile.local b/docker/Dockerfile.local
index b4a7b6504..693d8a952 100644
--- a/docker/Dockerfile.local
+++ b/docker/Dockerfile.local
@@ -5,15 +5,15 @@ RUN mkdir -p /etc/seaweedfs
 COPY ./filer.toml /etc/seaweedfs/filer.toml
 COPY ./entrypoint.sh /entrypoint.sh
 
-# volume server gprc port
+# volume server grpc port
 EXPOSE 18080
 # volume server http port
 EXPOSE 8080
-# filer server gprc port
+# filer server grpc port
 EXPOSE 18888
 # filer server http port
 EXPOSE 8888
-# master server shared gprc port
+# master server shared grpc port
 EXPOSE 19333
 # master server shared http port
 EXPOSE 9333