diff --git a/commitlint/fpHelpers.ts b/commitlint/fpHelpers.ts
index 3b7de9c5..74fc3bce 100644
--- a/commitlint/fpHelpers.ts
+++ b/commitlint/fpHelpers.ts
@@ -56,7 +56,10 @@ export class TypeHelpers {
     }
 
     // because instanceof doesn't work with primitive types (e.g. String), taken from https://stackoverflow.com/a/58184883/544947
-    public static IsInstanceOf(variable: any, type: any) {
+    public static IsInstanceOf(
+        variable: NonNullable<any>,
+        type: NonNullable<any>
+    ) {
         if (TypeHelpers.IsNullOrUndefined(variable)) {
             throw new Error(
                 "Invalid 'variable' parameter passed in: null or undefined"
diff --git a/docs/WorkflowGuidelines.md b/docs/WorkflowGuidelines.md
index a5f2f35f..df2564cb 100644
--- a/docs/WorkflowGuidelines.md
+++ b/docs/WorkflowGuidelines.md
@@ -192,10 +192,7 @@
         {
             return 0;
         }
-        else
-        {
-            return 1;
-        }
+        return 1;
         ```
 
         Improved code: