diff --git a/tools/db/update-file-state b/tools/db/update-file-state
index 0ee8313..f6f3b8e 100644
--- a/tools/db/update-file-state
+++ b/tools/db/update-file-state
@@ -78,7 +78,6 @@ function main() {
     db_query "SELECT ID FROM File Where TTCheck < '$DATE' OR TTCheck IS NULL;" | while read line; do
         #for each ID with an old check date ...
         ID=$line
-        TTSync=$(db_query "SELECT TTSync FROM File WHERE ID=$ID;")
         FILE=$(db_query "SELECT CONCAT('$moviedir/', Folder, '/', Name) FROM File WHERE ID=$ID;")
         if [ -f "$FILE" ]; then
             SIZE=$(db_query "SELECT Size FROM File WHERE ID=$ID;")
@@ -156,10 +155,25 @@ function file_add() {
     local name="$(echo "$relrevpath" | cut -d '/' -f 1 | rev)"
     local folder="$(echo "$relrevpath" | cut -d '/' -f 2- | rev)"
     local FILE="$moviedir/$(echo "$relrevpath" | rev)"
-    [ -f "$FILE" ] || return 1 #errer file not exist
+    [ -f "$FILE" ] || {
+        echo "ERROR: file_add: file not exist: $FILE"
+        return 1
+    }
     [ -z "$MD5" ] && MD5="$(md5sum "$FILE" | cut -c -32)"
     local SIZE="$(file_size "$FILE")"
 
+    #check if already exist
+    IDs=($(db_query "SELECT ID FROM File WHERE Name='$name' AND Folder='$folder' AND MD5='$MD5';"))
+    #wenn einmal existiert ...
+    [ "${#IDs[@]}" == 1 ] && {
+      [ "$(db_query "SELECT TTSync From File WHERE ID='${IDs[0]}';")" == $TTSYNC_DEL ] && db_query "UPDATE File SET TTSync=$TTSYNC_EXIST WHERE ID='${IDs[0]}';"
+      db_query "UPDATE File SET TTCheck='$DATE' WHERE ID='${IDs[0]}';"
+    }
+    [ "${#IDs[@]}" -gt 1 ] &&
+        ID=$i
+        echo "INFO: exists ... "
+
+    done
     #db path exist && md5 same -> update this entry
     #db path exist && ttsync=exist/backup && md5 !same -> ttsync=del + new db entry
     #or new db entry