diff --git a/DynamicModel.cc b/DynamicModel.cc
index e8a35f07f462ee52b18dae1f421b7f87f572e1fd..55f22502dd8cbf2f34eeabb34b194bfcaae92b05 100644
--- a/DynamicModel.cc
+++ b/DynamicModel.cc
@@ -3464,7 +3464,8 @@ DynamicModel::writeParamsDerivativesFile(const string &basename) const
       paramsDerivsFile << ";" << endl;
     }
 
-  paramsDerivsFile << "end" << endl;
+  paramsDerivsFile << "end" << endl
+                   << "end" << endl;
 
   writePowerDeriv(paramsDerivsFile, false);