diff --git a/packages/plugin-remove-duplicate-keys/lib/remove-duplicate-keys.js b/packages/plugin-remove-duplicate-keys/lib/remove-duplicate-keys.js
index 60a83510c..666277067 100644
--- a/packages/plugin-remove-duplicate-keys/lib/remove-duplicate-keys.js
+++ b/packages/plugin-remove-duplicate-keys/lib/remove-duplicate-keys.js
@@ -29,17 +29,20 @@ module.exports.report = () => 'Duplicate keys should be avoided';
 
 module.exports.match = () => ({
     __object: ({__object}) => {
+        let is = false;
         const newProps = [];
         const {properties} = __object;
         
-        for (const prop of properties.reverse()) {
+        for (const prop of properties.slice().reverse()) {
             if (isSpreadElement(prop) && isIdentifier(prop.argument)) {
                 const {name} = prop.argument;
                 const {length} = properties.filter(isSpreadId(name));
                 const newLength = newProps.filter(isSpreadId(name)).length;
                 
-                if (newLength && length > 1)
+                if (newLength && length > 1) {
+                    is = true;
                     continue;
+                }
             }
             
             if (isObjectProperty(prop) && isIdentifier(prop.key)) {
@@ -48,8 +51,10 @@ module.exports.match = () => ({
                 const {length} = properties.filter(isObjectPropertyId(name, computed));
                 const newLength = newProps.filter(isObjectPropertyId(name, computed)).length;
                 
-                if (newLength && length > 1)
+                if (newLength && length > 1) {
+                    is = true;
                     continue;
+                }
             }
             
             if (isObjectProperty(prop) && isStringLiteral(prop.key)) {
@@ -57,8 +62,10 @@ module.exports.match = () => ({
                 const {length} = properties.filter(isObjectPropertyLiteral(value));
                 const newLength = newProps.filter(isObjectPropertyLiteral(value)).length;
                 
-                if (newLength && length > 1)
+                if (newLength && length > 1) {
+                    is = true;
                     continue;
+                }
             }
             
             newProps.unshift(prop);
@@ -66,7 +73,7 @@ module.exports.match = () => ({
         
         store(newProps);
         
-        return true;
+        return is;
     },
 });
 
diff --git a/packages/plugin-remove-duplicate-keys/test/fixture/duplicate-fix.js b/packages/plugin-remove-duplicate-keys/test/fixture/duplicate-fix.js
index 154f01dd2..f72f086f3 100644
--- a/packages/plugin-remove-duplicate-keys/test/fixture/duplicate-fix.js
+++ b/packages/plugin-remove-duplicate-keys/test/fixture/duplicate-fix.js
@@ -1,4 +1,4 @@
 fn({
     ...b,
-    a,
+    a
 });