diff --git a/lib/util-iso-image.sh b/lib/util-iso-image.sh
index 4ceba79..27e85dc 100644
--- a/lib/util-iso-image.sh
+++ b/lib/util-iso-image.sh
@@ -65,12 +65,11 @@ configure_environment(){
 	case ${profile} in
 		cinnamon*|deepin*|gnome|i3|lxde|mate|netbook|openbox|pantheon|xfce*)
 			echo "QT_STYLE_OVERRIDE=gtk" >> $1/etc/environment
-			if [[ -f "$1/usr/lib/qt/plugins/styles/libqgtk2style.so" ]];then
-				sed -i 's|QT_STYLE_OVERRIDE=gtk|QT_STYLE_OVERRIDE=gtk2|g' $1/etc/environment
-			fi
 			if [[ -f "$1/usr/lib/qt/plugins/platformthemes/libqt5ct.so" ]];then
-				echo "QT_QPA_PLATFORMTHEME=qt5ct" >> $1/etc/environment
-				sed -i '/QT_STYLE_OVERRIDE=gtk/d' $1/etc/environment
+				sed -i 's|QT_STYLE_OVERRIDE=gtk|QT_QPA_PLATFORMTHEME=qt5ct|g' $1/etc/environment
+			fi
+			if [[ -f "$1/usr/lib/qt/plugins/styles/libqgtk2style.so" ]];then
+				echo "QT_STYLE_OVERRIDE=gtk2" >> $1/etc/environment
 			fi
 		;;
 	esac