diff --git a/src/compiler/types.ts b/src/compiler/types.ts
index ddb32e284f8..8272c4252a1 100644
--- a/src/compiler/types.ts
+++ b/src/compiler/types.ts
@@ -1,4 +1,4 @@
-namespace ts {
+namespace ts {
     /**
      * Type of objects whose values are all of the same type.
      * The `in` and `for-in` operators can *not* be safely used,