diff --git a/pkgs/tools/misc/catimg/default.nix b/pkgs/tools/misc/catimg/default.nix
index 6230b21c387..9edfc576837 100644
--- a/pkgs/tools/misc/catimg/default.nix
+++ b/pkgs/tools/misc/catimg/default.nix
@@ -19,6 +19,7 @@ stdenv.mkDerivation rec {
     description = "Insanely fast image printing in your terminal";
     maintainers = with maintainers; [ ryantm ];
     platforms = platforms.unix;
+    mainProgram = "catimg";
   };
 
 }