diff --git a/funct_gen.py b/funct_gen.py
index 35b36bf..102ee8f 100644
--- a/funct_gen.py
+++ b/funct_gen.py
@@ -64,7 +64,7 @@ def generate_config_spf_custom1(folder_output, input_vars, selected_params, file
 
     # Define the file path for the SPF configuration file
     spf_file_path = os.path.join(folder_path, filename)
-    xlsx_path = "cfg_inlay_PUTx.xlsx"
+    xlsx_path = "_cfg_inlay_PUTx.xlsx"
 
     # Extract grid parameters
     x_num = int(input_vars['inlay']['INL_X_NUM'].get())  # Number of columns