diff --git a/lib/rules/object-shorthand.js b/lib/rules/object-shorthand.js
index ff6a51a4d17..31010f0e738 100644
--- a/lib/rules/object-shorthand.js
+++ b/lib/rules/object-shorthand.js
@@ -255,7 +255,7 @@ module.exports = {
                     keyPrefix + keyText + sourceCode.text.slice(tokenBeforeParams.range[1], node.value.range[1])
                 );
             }
-            const arrowToken = sourceCode.getTokens(node.value).find(token => token.value === "=>");
+            const arrowToken = sourceCode.getTokenBefore(node.value.body, { filter: token => token.value === "=>" });
             const tokenBeforeArrow = sourceCode.getTokenBefore(arrowToken);
             const hasParensAroundParameters = tokenBeforeArrow.type === "Punctuator" && tokenBeforeArrow.value === ")";
             const oldParamText = sourceCode.text.slice(sourceCode.getFirstToken(node.value, node.value.async ? 1 : 0).range[0], tokenBeforeArrow.range[1]);
diff --git a/tests/lib/rules/object-shorthand.js b/tests/lib/rules/object-shorthand.js
index c52f43af089..19d2352909d 100644
--- a/tests/lib/rules/object-shorthand.js
+++ b/tests/lib/rules/object-shorthand.js
@@ -931,6 +931,14 @@ ruleTester.run("object-shorthand", rule, {
             parserOptions: { ecmaVersion: 8 },
             errors: [METHOD_ERROR]
         },
+        {
+
+            // https://github.com/eslint/eslint/issues/11305
+            code: "({ key: (arg = () => {}) => {} })",
+            output: "({ key(arg = () => {}) {} })",
+            options: ["always", { avoidExplicitReturnArrows: true }],
+            errors: [METHOD_ERROR]
+        },
         {
             code: `
                 function foo() {