diff --git a/lib/util/propTypes.js b/lib/util/propTypes.js
index 6ff6c3dcc5..15c7b44fec 100644
--- a/lib/util/propTypes.js
+++ b/lib/util/propTypes.js
@@ -1017,9 +1017,9 @@ module.exports = function propTypesInstructions(context, components, utils) {
         )
       )
     ) {
-      const propTypes = node.parent.typeArguments || node.parent.typeParameters;
+      const typeParams = node.parent.typeArguments || node.parent.typeParameters;
       const declaredPropTypes = {};
-      const obj = new DeclarePropTypesForTSTypeAnnotation(propTypes.params[1], declaredPropTypes);
+      const obj = new DeclarePropTypesForTSTypeAnnotation(typeParams.params[1], declaredPropTypes);
       components.set(node, {
         declaredPropTypes: obj.declaredPropTypes,
         ignorePropsValidation: obj.shouldIgnorePropTypes,