diff --git a/clang-tools-extra/docs/clang-tidy/checks/performance/enum-size.rst b/clang-tools-extra/docs/clang-tidy/checks/performance/enum-size.rst
index f72b8c7eabc22..b7631139a0133 100644
--- a/clang-tools-extra/docs/clang-tidy/checks/performance/enum-size.rst
+++ b/clang-tools-extra/docs/clang-tidy/checks/performance/enum-size.rst
@@ -34,7 +34,7 @@ dependent).
 .. code-block:: c++
 
     // AFTER
-    enum Color : std:int8_t {
+    enum Color : std::int8_t {
         RED = -1,
         GREEN = 0,
         BLUE = 1