diff --git a/IMSProg_programmer/other/IMSProg_database_update b/IMSProg_programmer/other/IMSProg_database_update
index f68d328..259a360 100755
--- a/IMSProg_programmer/other/IMSProg_database_update
+++ b/IMSProg_programmer/other/IMSProg_database_update
@@ -1,4 +1,6 @@
 #!/bin/bash
+zenity --question --text="The IMSProg.Dat file will be replaced with the new version. You may lose the changes made to it. Continue?" --ok-label="Yes" --cancel-label="No"
+if [ $? = 0 ] ; then
 IMSPROG_DB_URL=https://antenna-dvb-t2.ru/dl_all/IMSProg.Dat
 cd /tmp
 wget ${IMSPROG_DB_URL}
@@ -17,3 +19,7 @@ zenity --warning \
 --text="The number of chips in the database:\n\n$out_text" \
 --title="Database update" \
 --icon-name='applications-electronics'
+fi
+else
+fi
+