diff --git a/README.md b/README.md
index f4eca71..aec7913 100644
--- a/README.md
+++ b/README.md
@@ -123,6 +123,7 @@ This project replaces the ([camera monitor](https://launchpad.net/cameramonitor)
 - ##### `qt5ct` (All Distributions)
 - ##### `qt5-style-plugins` (All Distributions, but OpenSuse)
 - ##### `libqt5-qtstyleplugins-platformtheme-gtk2` (OpenSuSe) 
+- ##### `qt5gtk2` may be needed for correct popup (baloons) messages
 
 ### For All Distributions, add `lsof`, if is not installed at distribution's default installation.