diff --git a/doc/building-Boost-libs.txt b/doc/building-Boost-libs.txt
index f45b3ceec..79a7f9aaf 100644
--- a/doc/building-Boost-libs.txt
+++ b/doc/building-Boost-libs.txt
@@ -141,7 +141,7 @@ C:\Tools\boost-build\MinGW32\bin\b2 -j8 toolset=gcc ^
   --build-dir=%USERPROFILE%\build\boost ^
   address-model=32 architecture=x86 variant=debug,release ^
   link=shared threading=multi ^
-  --with-log --with-stacktrace --prefix=C:\Tools\boost install
+  --with-log --with-stacktrace --with-timer --prefix=C:\Tools\boost install
 
 If all is  well you should see  the following line about a  1/3 of the
 way through the initial configuration steps.
@@ -188,7 +188,7 @@ cd ..\..
 C:\Tools\boost-build\MinGW64\bin\b2 -j8 toolset=gcc-8~64 ^
   address-model=64 architecture=x86 variant=debug,release ^
   link=shared threading=multi ^
-  --with-log --with-stacktrace ^
+  --with-log --with-stacktrace --with-timer ^
   --build-dir=%USERPROFILE%\build\boost ^
   --prefix=C:\Tools\boost install
 
@@ -206,9 +206,11 @@ After some time it should complete with something like:
 warnings can usually  be ignored. If successful; you  can release some
 space by cleaning the build tree:
 
-C:\Tools\boost-build\MinGW32\bin\b2 toolset=gcc-8~64 ^
+C:\Tools\boost-build\MinGW64\bin\b2 toolset=gcc-8~64 ^
   address-model=64 --build-dir=%USERPROFILE%\build\boost ^
   --build-type=complete clean
+
+
 Run-time Environment
 --------------------