diff --git a/cmake/flags.cmake b/cmake/flags.cmake
index 5eacc017ceba34776856939cf76f7b7594386a07..a84769d56b6387ebb2305cb6b6e7543108198d54 100644
--- a/cmake/flags.cmake
+++ b/cmake/flags.cmake
@@ -157,7 +157,7 @@ if (APPLE)
         # On Mac OS X build fat binaries with x86_64 architectures by default.
         set (CMAKE_OSX_ARCHITECTURES "x86_64" CACHE STRING "Build architectures for OSX" FORCE)
     endif()
-    # On Mac OS X register class specifier is deprecated and will cause warning error on latest clang
+    # On Mac OS X register class specifier is deprecated and will cause warning error on latest clang 10.0.0
     set (COMMON_FLAGS -Wno-deprecated-register)
 endif(APPLE)