diff --git a/README.md b/README.md
index 2f1deac..7860d64 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,8 @@
 
 Search is case-insensitive by default. Matching files are printed to standard output in the order they are found in the catalog. See the [man page](https://sveinbjorn.org/files/manpages/searchfs.1.html) for details.
 
+[KatSearch](https://github.com/sveinbjornt/KatSearch) is a graphical application built on top of `searchfs`.
+
 ## Download
 
 * [⇩ Download searchfs binary](https://sveinbjorn.org/files/software/searchfs.zip) (<20 KB, Intel 64-bit, macOS 10.8 or later)
diff --git a/searchfs.1 b/searchfs.1
index 8db9aee..7d26aca 100644
--- a/searchfs.1
+++ b/searchfs.1
@@ -23,7 +23,7 @@ printed to STDOUT, one path per line. Search is case-insensitive by default
 The following flags are supported:
 .Bl -tag -width -indent
 .It Fl v, -volume Ar path
-Specify volume to search. Default is the root file system at /.
+Specify volume to search (by mount point). Default is the root file system at /.
 .It Fl d, -dirs-only
 Return only matching directories.
 .It Fl f, -files-only
diff --git a/searchfs.1.html b/searchfs.1.html
index c127ded..2560da5 100644
--- a/searchfs.1.html
+++ b/searchfs.1.html
@@ -24,7 +24,8 @@
      The following flags are supported:
 
      <b>-v,</b> <b>--volume</b> <u>path</u>
-              Specify volume to search. Default is the root file system at /.
+              Specify volume to search (by mount point). Default is the root
+              file system at /.
 
      <b>-d,</b> <b>--dirs-only</b>
               Return only matching directories.