diff --git a/pkgs/by-name/in/insync/package.nix b/pkgs/by-name/in/insync/package.nix
index 1cdc8816d1ea..b9257b1a572b 100644
--- a/pkgs/by-name/in/insync/package.nix
+++ b/pkgs/by-name/in/insync/package.nix
@@ -74,6 +74,9 @@ buildFHSEnv {
     pkgs: with pkgs; [
       libudev0-shim
       insync-pkg
+      # Qt requires usr/share/icons/hicolor/index.theme file (provided by hicolor-icon-theme) to be
+      # present to successfully find the system tray icons.
+      hicolor-icon-theme
     ];
 
   extraInstallCommands = ''
@@ -117,10 +120,6 @@ buildFHSEnv {
       and built in sharing.
 
       There is a 15-day free trial, and it is a paid application after that.
-
-      Known bug(s):
-
-      1) Currently the system try icon does not render correctly.
     '';
     mainProgram = "insync";
   };