diff --git a/src/rules/converters/prefer-readonly.ts b/src/rules/converters/prefer-readonly.ts
index 4e6d294ea..49fd54cb0 100644
--- a/src/rules/converters/prefer-readonly.ts
+++ b/src/rules/converters/prefer-readonly.ts
@@ -7,7 +7,7 @@ export const convertPreferReadonly: RuleConverter = tslintRule => {
                 ...(tslintRule.ruleArguments.includes("only-inline-lambdas") && {
                     ruleArguments: [{ onlyInlineLambdas: true }],
                 }),
-                ruleName: "prefer-readonly",
+                ruleName: "@typescript-eslint/prefer-readonly",
             },
         ],
     };
diff --git a/src/rules/converters/tests/prefer-readonly.test.ts b/src/rules/converters/tests/prefer-readonly.test.ts
index e2761caba..77fd684fe 100644
--- a/src/rules/converters/tests/prefer-readonly.test.ts
+++ b/src/rules/converters/tests/prefer-readonly.test.ts
@@ -9,7 +9,7 @@ describe(convertPreferReadonly, () => {
         expect(result).toEqual({
             rules: [
                 {
-                    ruleName: "prefer-readonly",
+                    ruleName: "@typescript-eslint/prefer-readonly",
                 },
             ],
         });
@@ -24,7 +24,7 @@ describe(convertPreferReadonly, () => {
             rules: [
                 {
                     ruleArguments: [{ onlyInlineLambdas: true }],
-                    ruleName: "prefer-readonly",
+                    ruleName: "@typescript-eslint/prefer-readonly",
                 },
             ],
         });