diff --git a/src/rules/noDupeKeys.js b/src/rules/noDupeKeys.js
index b4636e60..8b68dba5 100644
--- a/src/rules/noDupeKeys.js
+++ b/src/rules/noDupeKeys.js
@@ -49,7 +49,11 @@ const create = (context) => {
 
   const builObjectStructure = (properties) => {
     return _.map(properties, (property) => {
-      const element = analizeElement(property.value);
+      const element = analizeElement(
+        property.type === 'ObjectTypeSpreadProperty' ?
+          property.argument :
+          property.value
+      );
 
       return {
         ...element,
diff --git a/tests/rules/assertions/noDupeKeys.js b/tests/rules/assertions/noDupeKeys.js
index c7f0d32b..af7607df 100644
--- a/tests/rules/assertions/noDupeKeys.js
+++ b/tests/rules/assertions/noDupeKeys.js
@@ -107,6 +107,9 @@ export default {
     },
     {
       code: 'var a = 1; var b = 1; type f = { get(key: a): string, get(key: b): string }'
+    },
+    {
+      code: 'type a = { b: <C>(config: { ...C, key: string}) => C }'
     }
   ]
 };