diff --git a/packages/entity/src/behavior-components/expression.jsx b/packages/entity/src/behavior-components/expression.jsx
index a620c18..d507095 100644
--- a/packages/entity/src/behavior-components/expression.jsx
+++ b/packages/entity/src/behavior-components/expression.jsx
@@ -72,7 +72,12 @@ const Expression = ({
                 : {}
             ),
             ...(
-              vararg || (isLast && !isFirst)
+              vararg && isFirst
+                ? {'...': {label: '', type: description.type}}
+                : {}
+            ),
+            ...(
+              isLast && !isFirst
                 ? {'.': {label: '', type: description.type}}
                 : {}
             ),
@@ -90,11 +95,11 @@ const Expression = ({
           }}
           key={opPath}
           onChange={((i) => (event, value, localPath) => {
-            if ('.' === value) {
+            if (0 === value.indexOf('.')) {
               const parts = localPath.split('/');
               parts.pop();
               parts.pop();
-              if (vararg) {
+              if ('...' === value) {
                 parts.pop();
                 patch({
                   op: 'remove',
diff --git a/packages/entity/src/behavior-components/expression/invocation.jsx b/packages/entity/src/behavior-components/expression/invocation.jsx
index 0c599d0..ca08104 100644
--- a/packages/entity/src/behavior-components/expression/invocation.jsx
+++ b/packages/entity/src/behavior-components/expression/invocation.jsx
@@ -20,7 +20,7 @@ const Invocation = ({
       return (
         <Key
           childrenDescription={{
-            '.': {label: '', type: 'undefined'},
+            '...': {label: '', type: 'undefined'},
             '[literal]': {label: '', type: 'undefined'},
             ...context.describe().children,
             '[key]': {label: '', type: 'undefined'},
@@ -54,7 +54,7 @@ const Invocation = ({
             }
           }}
           path={argPath}
-          value="."
+          value="..."
         />
       );
     }