diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/editor.js b/packages/node_modules/@node-red/editor-client/src/js/ui/editor.js
index d7da5d06e..a5428e3ed 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/editor.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/editor.js
@@ -250,8 +250,8 @@ RED.editor = (function() {
         var newWidth = input.width();
         var attrStyle = input.attr('style');
         var m;
-        if ((m = /width\s*:\s*([^;]+)/i.exec(attrStyle)) !== null) {
-            newWidth = m[1].trim();
+        if ((m = /(^|\s|;)width\s*:\s*([^;]+)/i.exec(attrStyle)) !== null) {
+            newWidth = m[2].trim();
         } else {
             newWidth = "70%";
         }