diff --git a/tools/@aws-cdk/spec2cdk/lib/cdk/union-ordering.ts b/tools/@aws-cdk/spec2cdk/lib/cdk/union-ordering.ts
index 1690481619bd7..9b06b137c8f8d 100644
--- a/tools/@aws-cdk/spec2cdk/lib/cdk/union-ordering.ts
+++ b/tools/@aws-cdk/spec2cdk/lib/cdk/union-ordering.ts
@@ -114,7 +114,7 @@ function requiredPropertyNames(t: TypeDefinition): Set<string> {
 
 function assertTruthy<T>(x: T): NonNullable<T> {
   if (x == null) {
-    throw new Error('Expected truhty value');
+    throw new Error('Expected truthy value');
   }
   return x;
-}
\ No newline at end of file
+}