diff --git a/llvm/include/llvm/CodeGen/MIRYamlMapping.h b/llvm/include/llvm/CodeGen/MIRYamlMapping.h
index 9d5eb60e488a..7f9c44833336 100644
--- a/llvm/include/llvm/CodeGen/MIRYamlMapping.h
+++ b/llvm/include/llvm/CodeGen/MIRYamlMapping.h
@@ -7,9 +7,6 @@
 //
 //===----------------------------------------------------------------------===//
 //
-// The MIR serialization library is currently a work in progress. It can't
-// serialize machine functions at this time.
-//
 // This file implements the mapping between various MIR data structures and
 // their corresponding YAML representation.
 //