diff --git a/icu4c/source/common/unicode/utypes.h b/icu4c/source/common/unicode/utypes.h
index 67cb6c5a2d..050c2c4954 100644
--- a/icu4c/source/common/unicode/utypes.h
+++ b/icu4c/source/common/unicode/utypes.h
@@ -376,7 +376,7 @@ typedef enum UErrorCode {
 
     U_SORT_KEY_TOO_SHORT_WARNING = -123,
 
-    U_AMBIGUOUS_ALIAS_WARNING = -122,   /** This converter alias can go to different converter implementations */
+    U_AMBIGUOUS_ALIAS_WARNING = -122,   /**< This converter alias can go to different converter implementations */
 
     U_ERROR_WARNING_LIMIT,                 /**< This must always be the last warning value to indicate the limit for UErrorCode warnings (last warning code +1) */