diff --git a/packages/editor-ui/src/components/ExpressionInput.vue b/packages/editor-ui/src/components/ExpressionInput.vue
index 1bff6aace..9a0f89138 100644
--- a/packages/editor-ui/src/components/ExpressionInput.vue
+++ b/packages/editor-ui/src/components/ExpressionInput.vue
@@ -112,7 +112,7 @@ export default mixins(
 
 			AutoFormat.DEFAULTS = {
 				expression: {
-					trigger: /[\w\s]/,
+					trigger: /\B[\w\s]/,
 					find: /\{\{[^\s,;:!?}]+\}\}/i,
 					format: 'variable',
 				},