diff --git a/Help/chapter/CMake Cache.rst b/Help/chapter/CMake Cache.rst
index 235b63b69595ca403dd755394d467a5dd87b44f0..68acf897837cacf673becd0d928dc217ae34562b 100644
--- a/Help/chapter/CMake Cache.rst	
+++ b/Help/chapter/CMake Cache.rst	
@@ -150,7 +150,7 @@ following nightly dashboard script for a UNIX machine::
  cd Foo-Linux
 
  # run cmake to setup the cache
- cmake  DBUILD_TESTING:BOOL=ON <etc...> ../Foo
+ cmake -DBUILD_TESTING:BOOL=ON <etc...> ../Foo
 
  # generate the dashboard
  ctest -D Nightly