diff --git a/.eslintrc b/.eslintrc
index 8c5e5ae2ebb..fa822cf9122 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -47,7 +47,7 @@
         "@typescript-eslint/prefer-namespace-keyword": "off",
         "semi": "off",
         "@typescript-eslint/semi": "error",
-        "@typescript-eslint/type-annotation-spacing": "off",
+        "@typescript-eslint/type-annotation-spacing": "error",
         "@typescript-eslint/unified-signatures": "off",
 
         "microsoft-typescript/object-literal-surrounding-space": "off",
diff --git a/scripts/authors.ts b/scripts/authors.ts
index 639b5e40086..72f2997f6b7 100644
--- a/scripts/authors.ts
+++ b/scripts/authors.ts
@@ -111,7 +111,7 @@ namespace Commands {
     };
     listKnownAuthors.description = "List known authors as listed in .mailmap file.";
 
-    export const listAuthors: Command = function (...specs:string[]) {
+    export const listAuthors: Command = function (...specs: string[]) {
         const cmd = "git shortlog -se " + specs.join(" ");
         console.log(cmd);
         const outputRegExp = /\d+\s+([^<]+)<([^>]+)>/;