diff --git a/src/rez/system.py b/src/rez/system.py
index 64d2be7f7..abdc6981e 100644
--- a/src/rez/system.py
+++ b/src/rez/system.py
@@ -65,7 +65,8 @@ def shell(self):
         """Get the current shell.
 
         Returns:
-            The current shell this process is running in (bash, tcsh, pwsh, etc).
+            The current shell this process is running in (bash, tcsh, pwsh, etc). On Windows,
+            the return value is always "powershell".
         """
         from rez.shells import get_shell_types
         shells = set(get_shell_types())