diff --git a/P2P-reading-in-weed-mount.md b/P2P-reading-in-weed-mount.md
index ecdf3e9..fd61589 100644
--- a/P2P-reading-in-weed-mount.md
+++ b/P2P-reading-in-weed-mount.md
@@ -8,18 +8,16 @@ The design is documented in [design-weed-mount-peer-chunk-sharing.md](https://gi
 
 ## How it works at a glance
 
-```mermaid
-flowchart TB
-    Filer["Filer<br/>mount registry"]
-    Volumes["Volume servers"]
-    MountA["weed mount"]
-    MountB["weed mount"]
-
-    MountA --- Filer
-    MountB --- Filer
-    MountA -. "fallback" .-> Volumes
-    MountB -. "fallback" .-> Volumes
-    MountA <-- "peer fetch" --> MountB
+```
+    ┌──────────────────┐          ┌──────────────────┐
+    │  Filer           │          │  Volume servers  │
+    │  mount registry  │          │                  │
+    └────────┬─────────┘          └────────┬─────────┘
+             │ register / list             │ fallback
+             │                             │
+    ┌────────┴─────────┐  peer fetch  ┌────┴─────────────┐
+    │   weed mount     │ ◄──────────► │   weed mount     │
+    └──────────────────┘              └──────────────────┘
 ```
 
 ### Chunk read sequence