diff --git a/nnn.1 b/nnn.1
index 5575ed77..9432fa04 100644
--- a/nnn.1
+++ b/nnn.1
@@ -401,7 +401,7 @@ separated by \fI;\fR:
         export NNN_PLUG='y:-!sync*'
 
     5. To run a \fIGUI app as plugin\fR, add a \fB&\fR after \fB!\fR
-       Note: $nnn must be the last argument in this case.
+       Note: \fI$nnn\fR must be the last argument in this case.
 
         export NNN_PLUG='m:-!&mousepad $nnn'
 
diff --git a/plugins/README.md b/plugins/README.md
index 55826d89..6d2621db 100644
--- a/plugins/README.md
+++ b/plugins/README.md
@@ -165,7 +165,7 @@ To run a GUI app as plugin, add a `&` after `!`.
 export NNN_PLUG='m:-!&mousepad $nnn'
 ```
 
-Note: $nnn must be the last argument in this case.
+Note: `$nnn` must be the last argument in this case.
 
 #### Page non-interactive command output