diff --git a/packages/@aws-cdk/cloudformation-diff/lib/diff/types.ts b/packages/@aws-cdk/cloudformation-diff/lib/diff/types.ts
index 48626e2bc5e3b..5fbe1c15640f5 100644
--- a/packages/@aws-cdk/cloudformation-diff/lib/diff/types.ts
+++ b/packages/@aws-cdk/cloudformation-diff/lib/diff/types.ts
@@ -516,7 +516,7 @@ export enum ResourceImpact {
  * of property-level impacts.
  * @param one the current worst impact so far.
  * @param two the new impact being considered (can be undefined, as we may not always be
- *      able to determine some peroperty's impact).
+ *      able to determine some properties impact).
  */
 function worstImpact(one: ResourceImpact, two?: ResourceImpact): ResourceImpact {
   if (!two) { return one; }