diff --git a/pkgs/applications/misc/redshift/default.nix b/pkgs/applications/misc/redshift/default.nix
index 3130d30d8c83..c66b32696bba 100644
--- a/pkgs/applications/misc/redshift/default.nix
+++ b/pkgs/applications/misc/redshift/default.nix
@@ -138,6 +138,7 @@ rec {
       longDescription = "Gammastep"
         + lib.removePrefix "Redshift" redshift.meta.longDescription;
       homepage = "https://gitlab.com/chinstrap/gammastep";
+      mainProgram = "gammastep";
       maintainers = [ lib.maintainers.primeos ] ++ redshift.meta.maintainers;
     };
   };