diff --git a/pkgs/tools/security/cfssl/default.nix b/pkgs/tools/security/cfssl/default.nix
index cfc608820aaf..df13c004b1a7 100644
--- a/pkgs/tools/security/cfssl/default.nix
+++ b/pkgs/tools/security/cfssl/default.nix
@@ -38,5 +38,6 @@ buildGoModule rec {
     description = "Cloudflare's PKI and TLS toolkit";
     license = licenses.bsd2;
     maintainers = with maintainers; [ mbrgm ];
+    mainProgram = "cfssl";
   };
 }