diff --git a/pkgs/applications/audio/orca-c/default.nix b/pkgs/applications/audio/orca-c/default.nix
index 2c3a8fb1390..4bad4960337 100644
--- a/pkgs/applications/audio/orca-c/default.nix
+++ b/pkgs/applications/audio/orca-c/default.nix
@@ -31,5 +31,6 @@ stdenv.mkDerivation {
     license = licenses.mit;
     platforms = platforms.all;
     maintainers = with maintainers; [ netcrns ];
+    mainProgram = "orca";
   };
 }