diff --git a/README.md b/README.md
index ad019c4..045868d 100644
--- a/README.md
+++ b/README.md
@@ -48,7 +48,7 @@ bind = , PAUSE, exec, hyprfreeze -a
 -a, --active          toggle suspend by active window
 -p, --pid             toggle suspend by process id
 -n, --name            toggle suspend by process name/command
--r, --prop            toggle suspend by clicking on window
+-r, --prop            toggle suspend by clicking on window (hyprprop must be installed)
 
 -s, --silent          don't send notification
 -t, --notif-timeout   notification timeout in milliseconds (default 5000)
diff --git a/hyprfreeze b/hyprfreeze
index 803be21..3823f4f 100644
--- a/hyprfreeze
+++ b/hyprfreeze
@@ -12,7 +12,7 @@ Options:
   -a, --active          toggle suspend by active window
   -p, --pid             toggle suspend by process id
   -n, --name            toggle suspend by process name/command
-  -r, --prop            toggle suspend by clicking on window
+  -r, --prop            toggle suspend by clicking on window (hyprprop must be installed)
 
   -s, --silent          don't send notification
   -t, --notif-timeout   notification timeout in milliseconds (default 5000)