diff --git a/pkgs/applications/misc/joplin-desktop/default.nix b/pkgs/applications/misc/joplin-desktop/default.nix
index 2d9a2ca59045..6279d66b4e92 100644
--- a/pkgs/applications/misc/joplin-desktop/default.nix
+++ b/pkgs/applications/misc/joplin-desktop/default.nix
@@ -55,7 +55,8 @@ let
       install -Dm444 ${appimageContents}/@joplinapp-desktop.desktop -t $out/share/applications
       install -Dm444 ${appimageContents}/@joplinapp-desktop.png -t $out/share/pixmaps
       substituteInPlace $out/share/applications/@joplinapp-desktop.desktop \
-        --replace 'Exec=AppRun' 'Exec=${pname}'
+        --replace 'Exec=AppRun' 'Exec=${pname}' \
+        --replace 'Icon=joplin' "Icon=$out/share/pixmaps/@joplinapp-desktop.png"
     '';
   };