diff --git a/pkgs/applications/version-management/delta/default.nix b/pkgs/applications/version-management/delta/default.nix
index 79c511ec2c8c..7038ed13dc89 100644
--- a/pkgs/applications/version-management/delta/default.nix
+++ b/pkgs/applications/version-management/delta/default.nix
@@ -54,5 +54,6 @@ rustPlatform.buildRustPackage rec {
     changelog = "https://github.com/dandavison/delta/releases/tag/${version}";
     license = licenses.mit;
     maintainers = with maintainers; [ marsam zowoq SuperSandro2000 figsoda ];
+    mainProgram = "delta";
   };
 }