diff --git a/.eslintrc b/.eslintrc
index edd1712fc98..966f58e82e3 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -35,7 +35,7 @@
         "@typescript-eslint/no-namespace": "off",
         "@typescript-eslint/no-object-literal-type-assertion": "off",
         "@typescript-eslint/no-parameter-properties": "off",
-        "@typescript-eslint/no-this-alias": "off",
+        "@typescript-eslint/no-this-alias": "error",
         "@typescript-eslint/no-triple-slash-reference": "off",
         "@typescript-eslint/no-unnecessary-qualifier": "off",
         "@typescript-eslint/no-unnecessary-type-assertion": "off",
diff --git a/src/testRunner/externalCompileRunner.ts b/src/testRunner/externalCompileRunner.ts
index c3b2ef3e6ec..f21d7ea9b90 100644
--- a/src/testRunner/externalCompileRunner.ts
+++ b/src/testRunner/externalCompileRunner.ts
@@ -26,7 +26,7 @@ abstract class ExternalCompileRunnerBase extends RunnerBase {
         // Read in and evaluate the test list
         const testList = this.tests && this.tests.length ? this.tests : this.enumerateTestFiles();
 
-        // tslint:disable-next-line:no-this-assignment
+        // eslint-disable-next-line @typescript-eslint/no-this-alias
         const cls = this;
         describe(`${this.kind()} code samples`, function(this: Mocha.ISuiteCallbackContext) {
             this.timeout(600_000); // 10 minutes
@@ -36,7 +36,7 @@ abstract class ExternalCompileRunnerBase extends RunnerBase {
         });
     }
     private runTest(directoryName: string) {
-        // tslint:disable-next-line:no-this-assignment
+        // eslint-disable-next-line @typescript-eslint/no-this-alias
         const cls = this;
         const timeout = 600_000; // 10 minutes
         describe(directoryName, function(this: Mocha.ISuiteCallbackContext) {