diff --git a/doc/src/Build_extras.txt b/doc/src/Build_extras.txt
index 69f65a451f666c89e1afbdf328072f5920a75d94..b55efa02a7d59ebbd0dd384593f10c0bdb0ec390 100644
--- a/doc/src/Build_extras.txt
+++ b/doc/src/Build_extras.txt
@@ -685,7 +685,7 @@ intel"_Speed_intel.html doc page.
 
 [CMake build]:
 
--D INTEL_ARCH=value     # value = cpu (default) or knl :pre
+-D INTEL_ARCH=value     # value = cpu (default) or knl
 -D BUILD_OMP=yes        # also required to build with the USER-INTEl package :pre
 
 Requires an Intel compiler as well as the Intel TBB and MKL libraries.