diff --git a/lib/spack/spack/modules/common.py b/lib/spack/spack/modules/common.py
index 9ecee48810c15ad5ec2fc97415f0bd00d998a358..517c9a0270948aa2ca9079f6a9dbf57365a89e2b 100644
--- a/lib/spack/spack/modules/common.py
+++ b/lib/spack/spack/modules/common.py
@@ -211,7 +211,7 @@ def root_path(name):
     """Returns the root folder for module file installation.
 
     Args:
-        name: name of the module system t be used (e.g. 'tcl')
+        name: name of the module system to be used (e.g. 'tcl')
 
     Returns:
         root folder for module file installation