diff --git a/src/compiler/types.ts b/src/compiler/types.ts
index 9da409487df..3277e7e7950 100644
--- a/src/compiler/types.ts
+++ b/src/compiler/types.ts
@@ -2058,8 +2058,8 @@ namespace ts {
         SuperInstance               = 0x00000100,  // Instance 'super' reference
         SuperStatic                 = 0x00000200,  // Static 'super' reference
         ContextChecked              = 0x00000400,  // Contextual types have been assigned
-        AsyncMethodWithSuper        = 0x00000800,
-        AsyncMethodWithSuperBinding = 0x00001000,
+        AsyncMethodWithSuper        = 0x00000800,  // An async method that reads a value from a member of 'super'.
+        AsyncMethodWithSuperBinding = 0x00001000,  // An async method that assigns a value to a member of 'super'.
         CaptureArguments            = 0x00002000,  // Lexical 'arguments' used in body (for async functions)
 
         // Values for enum members have been computed, and any errors have been reported for them.