diff --git a/docker-compose.yml b/docker-compose.yml
index 3a40e44..c94be4f 100755
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -8,7 +8,7 @@ services:
   selenium_hub:
     image: selenium/hub:3.12.0-americium
     ports:
-      - "4444:4444"
+      - 4444:4444
 
   # There is a bug for using appium. Issue: https://github.com/butomo1989/docker-android/issues/73
   # Real devices
@@ -60,7 +60,7 @@ services:
       - 6080
     # Change path of apk that you want to test. I use sample_apk that I provide in folder "example"
     volumes:
-      - $PWD/example/sample_apk:/root/tmp
+      - $PWD/example/sample_apk:/opt
       - ./video-nexus_7.1.1:/tmp/video
     environment:
       - DEVICE=Nexus 5