diff --git a/data_from_portwine/scripts/functions_helper b/data_from_portwine/scripts/functions_helper
index f2da1368..51b91eda 100755
--- a/data_from_portwine/scripts/functions_helper
+++ b/data_from_portwine/scripts/functions_helper
@@ -692,7 +692,7 @@ var_radv_perftest_config_update () {
 }
 
 var_pw_vk_istance_layers_config_update () {
-    if echo "$PW_VK_INSTANCE_LAYERS" | grep "$1"
+    if echo "$PW_VK_INSTANCE_LAYERS" | grep -q "$1"
     then return 0
     else export PW_VK_INSTANCE_LAYERS="${1}${PW_VK_INSTANCE_LAYERS:+:$PW_VK_INSTANCE_LAYERS}"
     fi
@@ -5926,7 +5926,7 @@ gui_mangohud () {
 
     export MANGOHUD_CONFIG="${GUI_MH_RESULT}"
     export PW_MANGOHUD FPS_LIMIT
-    edit_db_from_gui MANGOHUD_CONFIG PW_MANGOHUD FPS_LIMIT
+    edit_db_from_gui PW_MANGOHUD_CONFIG PW_MANGOHUD FPS_LIMIT
 
     if [[ "${YAD_MANGOHUD_STATUS}" == "184" ]] ; then
         PW_MANGOHUD="1"