diff --git a/src/model.cpp b/src/model.cpp
index 2317b96..096bf1a 100644
--- a/src/model.cpp
+++ b/src/model.cpp
@@ -200,7 +200,7 @@ void Model::to_text(PT::TextStream & stream, ModelData * model_data, bool clear_
 		{
 			try
 			{
-				prepare_table();
+				// prepare_table(); at the moment flat strings (json/space) do not need a table name
 				flat_connector->to_text(stream, *this);
 			}
 			catch(...)
diff --git a/src/model.h b/src/model.h
index f7b84aa..25d95b1 100644
--- a/src/model.h
+++ b/src/model.h
@@ -969,10 +969,11 @@ protected:
 			field_model.model_env = &model_env_local;
 			field_model.model_env->has_primary_key_set = field_model.has_primary_key_set;
 			field_model.set_connector(model_connector);
-			field_model.prepare_table();
 
 			if( !is_empty_field(db_field_name) )
 			{
+				field_model.prepare_table();
+
 				if( field_type.is_foreign_key() || field_type.is_foreign_key_in_child() )
 				{
 					field_model_for_db(db_field_name, field_model, field_type);
@@ -993,6 +994,7 @@ protected:
 			{
 				if( model_env->model_work_mode == MORM_MODEL_WORK_MODE_GENERATING_FLAT_STRING )
 				{
+					// calling field_model.prepare_table(); is not needed in generating strings (at least for json/space formats)
 					field_model_generate_flat_string(flat_field_name, field_model, field_type);
 				}
 			}