diff --git a/app/src/main/kotlin/com/simplemobiletools/calendar/helpers/DBHelper.kt b/app/src/main/kotlin/com/simplemobiletools/calendar/helpers/DBHelper.kt
index c74bce1c7..f40001cbe 100644
--- a/app/src/main/kotlin/com/simplemobiletools/calendar/helpers/DBHelper.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/calendar/helpers/DBHelper.kt
@@ -160,11 +160,11 @@ class DBHelper private constructor(val context: Context) : SQLiteOpenHelper(cont
             db.execSQL("ALTER TABLE $MAIN_TABLE_NAME ADD COLUMN $COL_EVENT_SOURCE TEXT DEFAULT ''")
         }
 
-        if (oldVersion < 16) {
+        if (oldVersion in 7..15) {
             db.execSQL("ALTER TABLE $TYPES_TABLE_NAME ADD COLUMN $COL_TYPE_CALDAV_CALENDAR_ID INTEGER NOT NULL DEFAULT 0")
         }
 
-        if (oldVersion < 17) {
+        if (oldVersion in 7..17) {
             db.execSQL("ALTER TABLE $TYPES_TABLE_NAME ADD COLUMN $COL_TYPE_CALDAV_DISPLAY_NAME TEXT DEFAULT ''")
             db.execSQL("ALTER TABLE $TYPES_TABLE_NAME ADD COLUMN $COL_TYPE_CALDAV_EMAIL TEXT DEFAULT ''")
         }