diff --git a/example/docker-compose.yml b/example/docker-compose.yml
index fe61e4d..d6be6b9 100644
--- a/example/docker-compose.yml
+++ b/example/docker-compose.yml
@@ -37,7 +37,7 @@ services:
     logging:
       options:
         max-size: 1M
-        max-file: 10
+        max-file: "10"
     deploy:
       resources:
         limits:
@@ -65,7 +65,7 @@ services:
     logging:
       options:
         max-size: 1M
-        max-file: 10
+        max-file: "10"
     deploy:
       resources:
         limits: