diff --git a/mlir/include/mlir/IR/Types.h b/mlir/include/mlir/IR/Types.h
index 430ed0d2215df..f2a69660ae9f7 100644
--- a/mlir/include/mlir/IR/Types.h
+++ b/mlir/include/mlir/IR/Types.h
@@ -68,7 +68,7 @@ namespace mlir {
 ///      context and the key type for this storage.
 ///
 ///    - If they have a mutable component, this component must not be a part of
-//       the key.
+///      the key.
 class Type {
 public:
   /// Utility class for implementing types.