diff --git a/doc/install.rst b/doc/install.rst
index 059bea1746060d2092f424f94399eb3a04840d25..3ca16340b8f8dcdaf2021d15da845c356a26c7ad 100644
--- a/doc/install.rst
+++ b/doc/install.rst
@@ -516,7 +516,7 @@ Putting it all together, a typical workflow to build Arbor on a Cray system is:
 
     export CRAYPE_LINK_TYPE=dynamic
     module swap PrgEnv-cray PrgEnv-gnu
-    moudle swap gcc/7.1.0
+    module swap gcc/7.1.0
     export CC=`which cc`; export CXX=`which CC`;
     cmake -DARB_WITH_MPI=ON    # MPI support