diff --git a/packages/spectacle/src/utils/indent-normalizer.test.ts b/packages/spectacle/src/utils/indent-normalizer.test.ts
index 00bb7ecb..04b56519 100644
--- a/packages/spectacle/src/utils/indent-normalizer.test.ts
+++ b/packages/spectacle/src/utils/indent-normalizer.test.ts
@@ -2,9 +2,7 @@ import indentNormalizer from './indent-normalizer';
 
 describe('indentNormalizer', () => {
   it('handles empty cases', () => {
-    // @ts-ignore
     expect(indentNormalizer()).toEqual('');
-    // @ts-ignore
     expect(indentNormalizer(null)).toEqual('');
     expect(indentNormalizer('')).toEqual('');
     expect(indentNormalizer(' ')).toEqual('');
diff --git a/packages/spectacle/src/utils/indent-normalizer.ts b/packages/spectacle/src/utils/indent-normalizer.ts
index 00d4e5c5..78ef1e29 100644
--- a/packages/spectacle/src/utils/indent-normalizer.ts
+++ b/packages/spectacle/src/utils/indent-normalizer.ts
@@ -1,5 +1,5 @@
 // Indent to smallest non-empty whitespace level and trim start / end of string.
-const indentNormalizer = (val: string) => {
+const indentNormalizer = (val?: string | null) => {
   let prefix: string | null = null;
   return (val || '')
     .split('\n')