diff --git a/pkgs/tools/system/erdtree/default.nix b/pkgs/tools/system/erdtree/default.nix
index ddca2f106b49..7cd1deb3ced6 100644
--- a/pkgs/tools/system/erdtree/default.nix
+++ b/pkgs/tools/system/erdtree/default.nix
@@ -21,5 +21,6 @@ rustPlatform.buildRustPackage rec {
     homepage = "https://github.com/solidiquis/erdtree";
     license = licenses.mit;
     maintainers = with maintainers; [ zendo ];
+    mainProgram = "et";
   };
 }