diff --git a/CHANGELOG.md b/CHANGELOG.md
index ecb9789788..ca44284b72 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,10 +16,12 @@ This change log adheres to standards from [Keep a CHANGELOG](https://keepachange
 ### Changed
 * [Refactor] [`jsx-indent-props`]: improved readability of the checkNodesIndent function ([#3315][] @caroline223)
 * [Tests] [`jsx-indent`], [`jsx-one-expression-per-line`]: add passing test cases ([#3314][] @ROSSROSALES)
+* [Refactor] `boolean-prop-naming`, `jsx-indent`: avoid assigning to arguments ([#3316][] @caroline223)
 
 [#3321]: https://github.com/jsx-eslint/eslint-plugin-react/pull/3321
 [#3320]: https://github.com/jsx-eslint/eslint-plugin-react/pull/3320
 [#3317]: https://github.com/jsx-eslint/eslint-plugin-react/pull/3317
+[#3316]: https://github.com/jsx-eslint/eslint-plugin-react/pull/3316
 [#3315]: https://github.com/jsx-eslint/eslint-plugin-react/pull/3315
 [#3314]: https://github.com/jsx-eslint/eslint-plugin-react/pull/3314
 [#3311]: https://github.com/jsx-eslint/eslint-plugin-react/pull/3311
diff --git a/lib/rules/boolean-prop-naming.js b/lib/rules/boolean-prop-naming.js
index b4cd5a790f..0d00c051e2 100644
--- a/lib/rules/boolean-prop-naming.js
+++ b/lib/rules/boolean-prop-naming.js
@@ -172,9 +172,7 @@ module.exports = {
      * @param {Function} addInvalidProp callback to run for each error
      */
     function runCheck(proptypes, addInvalidProp) {
-      proptypes = proptypes || [];
-
-      proptypes.forEach((prop) => {
+      (proptypes || []).forEach((prop) => {
         if (config.validateNested && nestedPropTypes(prop)) {
           runCheck(prop.value.arguments[0].properties, addInvalidProp);
           return;
diff --git a/lib/rules/jsx-indent.js b/lib/rules/jsx-indent.js
index ad14fa6a34..6946e35f6b 100644
--- a/lib/rules/jsx-indent.js
+++ b/lib/rules/jsx-indent.js
@@ -168,9 +168,6 @@ module.exports = {
      * @return {Number} Indent
      */
     function getNodeIndent(node, byLastLine, excludeCommas) {
-      byLastLine = byLastLine || false;
-      excludeCommas = excludeCommas || false;
-
       let src = context.getSourceCode().getText(node, node.loc.start.column + extraColumnStart);
       const lines = src.split('\n');
       if (byLastLine) {