diff --git a/source/ubinstall-gtk-installation.c b/source/ubinstall-gtk-installation.c
index 4a0d2d3..4c162da 100644
--- a/source/ubinstall-gtk-installation.c
+++ b/source/ubinstall-gtk-installation.c
@@ -132,7 +132,7 @@ int yon_install_same_partition_save(main_window *widgets){
         yon_config_register(part_parameter,part_parameter_command,part);
 
     if (gtk_switch_get_active(GTK_SWITCH(widgets->SameInstallationFormatSwitch))){
-        yon_config_register(part_format_parameter,part_format_parameter_command,"yes");
+        yon_config_register(part_format_parameter,part_format_parameter_command,"no");
         char *device_name = (char*)gtk_entry_get_text(GTK_ENTRY(widgets->SameInstallationSectionNameEntry));
         if (!yon_char_is_empty(device_name)){
             yon_config_register(part_label_parameter,part_label_parameter_command,device_name);
@@ -148,7 +148,7 @@ int yon_install_same_partition_save(main_window *widgets){
 
         }
     } else {
-        yon_config_register(part_format_parameter,part_format_parameter_command,"no");
+        yon_config_register(part_format_parameter,part_format_parameter_command,"yes");
         yon_config_remove_by_key(part_label_parameter);
         yon_config_remove_by_key(part_format_parameter);
         yon_config_remove_by_key(part_fs_type_parameter);