diff --git a/doc/user/index.md b/doc/user/index.md
index 7bb1202..a7892c1 100644
--- a/doc/user/index.md
+++ b/doc/user/index.md
@@ -17,7 +17,7 @@ session as a script.
 ```
 ┌──────────┐    ┌──────────┐
 │ Module A │    │ Module B │
-│  Part J1 │◀──▶│  Part P1 │   <— a Connection (built by `connect`)
+│  Part J1 │←──→│  Part P1 │   <— a Connection (built by `connect`)
 │   pins   │    │   pins   │
 └──────────┘    └──────────┘
 ```