diff --git a/docs/gallery/02_mermaid.md b/docs/gallery/02_mermaid.md
index 734b921..216eaea 100644
--- a/docs/gallery/02_mermaid.md
+++ b/docs/gallery/02_mermaid.md
@@ -63,8 +63,8 @@ sequenceDiagram
   B-->>-G: CONNACK
   G-->>-N: Join accept, session keys
   loop Every 15 minutes
-    N->>G: Reading (CoAP NON)
-    G->>B: PUBLISH sn100/leeds/42/temp
+    N-)G: Reading (CoAP NON)
+    G-)B: PUBLISH sn100/leeds/42/temp
     B-)D: Push the reading
   end
   alt Battery below 2.4 V
@@ -89,8 +89,8 @@ sequenceDiagram
   B-->>-G: CONNACK
   G-->>-N: Join accept, session keys
   loop Every 15 minutes
-    N->>G: Reading (CoAP NON)
-    G->>B: PUBLISH sn100/leeds/42/temp
+    N-)G: Reading (CoAP NON)
+    G-)B: PUBLISH sn100/leeds/42/temp
     B-)D: Push the reading
   end
   alt Battery below 2.4 V
diff --git a/examples/poster/release.md b/examples/poster/release.md
index 996a600..41b1b31 100644
--- a/examples/poster/release.md
+++ b/examples/poster/release.md
@@ -71,10 +71,10 @@ sequenceDiagram
   Note right of N: Write the spare copy, check the hash
   Note right of N: Restart into 2.1, self-test
   alt Self-test passes
-    N->>B: Running 2.1
+    N-->>B: Running 2.1
   else Self-test fails
     Note right of N: Restart into 2.0
-    N->>B: Update failed, still 2.0
+    N-->>B: Update failed, still 2.0
   end
 ```