diff --git a/pkgs/by-name/te/teams-for-linux/package.nix b/pkgs/by-name/te/teams-for-linux/package.nix
index e56fc15f9f26..76349a684778 100644
--- a/pkgs/by-name/te/teams-for-linux/package.nix
+++ b/pkgs/by-name/te/teams-for-linux/package.nix
@@ -106,7 +106,7 @@ buildNpmPackage rec {
   desktopItems = [
     (makeDesktopItem {
       name = "teams-for-linux";
-      exec = "teams-for-linux";
+      exec = "teams-for-linux %U";
       icon = "teams-for-linux";
       desktopName = "Microsoft Teams for Linux";
       comment = meta.description;
@@ -115,6 +115,7 @@ buildNpmPackage rec {
         "InstantMessaging"
         "Chat"
       ];
+      mimeTypes = [ "x-scheme-handler/msteams" ];
     })
   ];