diff --git a/README.md b/README.md
index f5ec903..0b9286e 100644
--- a/README.md
+++ b/README.md
@@ -91,7 +91,7 @@ client.on :connect do
   )
 
   # Subscribe to events matching conditions of a filter
-  subscription = client.subscribe(filter)
+  subscription = client.subscribe(filter: filter)
 
   # Unsubscribe from events matching the filter above
   client.unsubscribe(subscription.id)
diff --git a/docs/getting-started/overview.md b/docs/getting-started/overview.md
index 444f742..801fb4c 100644
--- a/docs/getting-started/overview.md
+++ b/docs/getting-started/overview.md
@@ -138,7 +138,7 @@ client.on :connect do
   )
 
   # Subscribe to events matching conditions of a filter
-  subscription = client.subscribe(filter)
+  subscription = client.subscribe(filter: filter)
 
   # Unsubscribe from events matching the filter above
   client.unsubscribe(subscription.id)