1 files changed, 1 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/servers/monitoring/prometheus/mail-exporter.nix b/nixpkgs/pkgs/servers/monitoring/prometheus/mail-exporter.nix
index ae13becd0aed..851d297e760f 100644
--- a/nixpkgs/pkgs/servers/monitoring/prometheus/mail-exporter.nix
+++ b/nixpkgs/pkgs/servers/monitoring/prometheus/mail-exporter.nix
@@ -24,6 +24,7 @@ buildGoModule {
 
   meta = with lib; {
     description = "Export Prometheus-style metrics about mail server functionality";
+    mainProgram = "mailexporter";
     homepage = "https://github.com/cherti/mailexporter";
     license = licenses.gpl3;
     maintainers = with maintainers; [ willibutz globin ];