diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/view.js b/packages/node_modules/@node-red/editor-client/src/js/ui/view.js
index 6f934eb8e..c230609f4 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/view.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/view.js
@@ -6543,6 +6543,18 @@ RED.view = (function() {
             if (!Array.isArray(suggestion.nodes[0])) {
                 suggestion.nodes = [suggestion.nodes]
             }
+            // Validate the suggestions only contain node types we recognise - filter out any we don't
+            suggestion.nodes = suggestion.nodes.filter(suggestedNodes => {
+                if (!Array.isArray(suggestedNodes)) {
+                    suggestedNodes = [suggestedNodes]
+                }
+                suggestedNodes = suggestedNodes.filter(n => {
+                    const def = RED.nodes.getType(n.type)
+                    return !!def
+                })
+                return suggestedNodes.length > 0
+            })
+
             suggestion.count = suggestion.nodes.length
             suggestion.currentIndex = 0
             suggestion.current = suggestion.nodes[suggestion.currentIndex]