diff --git a/pkgs/by-name/re/remarshal_0_17/package.nix b/pkgs/by-name/re/remarshal_0_17/package.nix
index 97a39d340fcd..112df133fcd0 100644
--- a/pkgs/by-name/re/remarshal_0_17/package.nix
+++ b/pkgs/by-name/re/remarshal_0_17/package.nix
@@ -58,5 +58,6 @@ pythonPackages.buildPythonApplication rec {
     license = licenses.mit;
     homepage = "https://github.com/dbohdan/remarshal";
     maintainers = with maintainers; [ hexa ];
+    mainProgram = "remarshal";
   };
 }
diff --git a/pkgs/development/python-modules/remarshal/default.nix b/pkgs/development/python-modules/remarshal/default.nix
index 3889396c5d9f..45b745d0f887 100644
--- a/pkgs/development/python-modules/remarshal/default.nix
+++ b/pkgs/development/python-modules/remarshal/default.nix
@@ -53,5 +53,6 @@ buildPythonPackage rec {
     license = licenses.mit;
     homepage = "https://github.com/dbohdan/remarshal";
     maintainers = with maintainers; [ offline ];
+    mainProgram = "remarshal";
   };
 }