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-rw-r--r--nixpkgs/pkgs/games/gl-gsync-demo/default.nix1
1 files changed, 1 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/games/gl-gsync-demo/default.nix b/nixpkgs/pkgs/games/gl-gsync-demo/default.nix
index 968d4d5e4a3d..2027b9d3b27e 100644
--- a/nixpkgs/pkgs/games/gl-gsync-demo/default.nix
+++ b/nixpkgs/pkgs/games/gl-gsync-demo/default.nix
@@ -26,6 +26,7 @@ stdenv.mkDerivation rec {
     platforms = platforms.linux;
     maintainers = with maintainers; [ atemu ];
     description = "A very basic OpenGL demo for testing NVIDIA's G-SYNC technology on Linux";
+    mainProgram = "gl-gsync-demo";
     longDescription = ''
       The demo simply draws a vertical bar moving across the screen at constant speed, but deliberately rendered at a variable frame rate.