diff --git a/pkgs/tools/networking/swagger-codegen3/default.nix b/pkgs/tools/networking/swagger-codegen3/default.nix
index b0eeb4d48ae6..daa68695c0cf 100644
--- a/pkgs/tools/networking/swagger-codegen3/default.nix
+++ b/pkgs/tools/networking/swagger-codegen3/default.nix
@@ -30,5 +30,6 @@ stdenv.mkDerivation rec {
     sourceProvenance = with sourceTypes; [ binaryBytecode ];
     license = licenses.asl20;
     maintainers = [ maintainers._1000101 ];
+    mainProgram = "swagger-codegen3";
   };
 }