diff --git a/CHANGELOG.md b/CHANGELOG.md
index d1e486d..84465c2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,10 +1,11 @@
 ### Change Log for Node-RED Worldmap
 
+ - v2.37.1 - Warn (and drop) messages that are missing a payload. Issue #229
  - v2.37.0 - Allow fly instead of fit option when using command to move view window. (PR #225)
  - v2.36.0 - Add edge icons for SIDC markers just off the map.
  - v2.35.0 - Let clickable:false work for markers as well.
- - v2.34.0 - Let icon "url" be a local fixed path (PR #223)
- - v2.33.0 - Let shapes create click event. (from PR #221)
+ - v2.34.0 - Let icon "url" be a local fixed path. PR #223
+ - v2.33.0 - Let shapes create click event. from PR #221
              Fix heatmap delete point bug. Issue #222
  - v2.32.3 - Fix map split in iframe position
  - v2.32.1 - Let command.heatmap replace complete heatmap array.
diff --git a/README.md b/README.md
index 8d59802..210d56f 100644
--- a/README.md
+++ b/README.md
@@ -11,11 +11,12 @@ map web page for plotting "things" on.
 
 ### Updates
 
+- v2.37.1 - Warn (and drop) messages that are missing a payload. Issue #229
 - v2.37.0 - Allow fly instead of fit option when using command to move view window. (PR #225)
 - v2.36.0 - Add edge icons for SIDC markers just off the map.
 - v2.35.0 - Let clickable:false work for markers as well.
-- v2.34.0 - Let icon "url" be a local fixed path (PR #223)
-- v2.33.0 - Let shapes create click event. (from PR #221)
+- v2.34.0 - Let icon "url" be a local fixed path. PR #223
+- v2.33.0 - Let shapes create click event. from PR #221
             Fix heatmap delete point bug. Issue #222
 - v2.32.2 - Fix map split in iframe position
 - v2.32.1 - Let command.map.heatmap replace complete heatmap array.
diff --git a/package.json b/package.json
index 8301667..ffd749b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "node-red-contrib-web-worldmap",
-    "version": "2.37.0",
+    "version": "2.37.1",
     "description": "A Node-RED node to provide a web page of a world map for plotting things on.",
     "dependencies": {
         "@turf/bezier-spline": "~6.5.0",
diff --git a/worldmap.js b/worldmap.js
index ea493dd..c57d39f 100644
--- a/worldmap.js
+++ b/worldmap.js
@@ -121,6 +121,7 @@ module.exports = function(RED) {
             node.status({fill:"green",shape:"dot",text:"connected "+Object.keys(clients).length,_sessionid:client.id});
         }
         node.on('input', function(msg) {
+            if (!msg.hasOwnProperty("payload")) { node.warn("Missing payload"); return; }
             if (msg.hasOwnProperty("_sessionid")) {
                 if (clients.hasOwnProperty(msg._sessionid)) {
                     clients[msg._sessionid].write(JSON.stringify(msg.payload));