diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 161ac54661d..1aa95546d3d 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -17418,7 +17418,7 @@ namespace ts {
             }
 
             function narrowTypeByTypeof(type: Type, typeOfExpr: TypeOfExpression, operator: SyntaxKind, literal: LiteralExpression, assumeTrue: boolean): Type {
-                // We have '==', '!=', '====', or !==' operator with 'typeof xxx' and string literal operands
+                // We have '==', '!=', '===', or !==' operator with 'typeof xxx' and string literal operands
                 const target = getReferenceCandidate(typeOfExpr.expression);
                 if (!isMatchingReference(reference, target)) {
                     // For a reference of the form 'x.y', a 'typeof x === ...' type guard resets the