diff --git a/content/tutorials/naming/mount-table.md b/content/tutorials/naming/mount-table.md
index 5fae2f6..44353ad 100644
--- a/content/tutorials/naming/mount-table.md
+++ b/content/tutorials/naming/mount-table.md
@@ -53,7 +53,7 @@
 
 <!-- @queryMountTable @test -->
 ```
-$V_BIN/vrpc signature /localhost:$PORT_MT
+$V_BIN/vrpc signature -s /localhost:$PORT_MT
 ```
 
 It also means that the mount table has a [principal] - it must run
@@ -67,6 +67,9 @@
 when processes start talking to each other.  Mount table security will
 be discussed in later tutorial.
 
+The `-s` option stands for 'shallow resolve'.  It forces vprc to apply
+to mount table itself and not what might be mounted at its root.
+
 # The namespace client
 
 The table is up, but empty.