diff --git a/scripts/clean_data.sh b/scripts/clean_data.sh
index d908380..7bb0c97 100755
--- a/scripts/clean_data.sh
+++ b/scripts/clean_data.sh
@@ -10,6 +10,13 @@ do
   touch -t $date $DATA_PATH/*/$BLOCK.*
 done
 
+# Conserver les blocks vides
+for BLOCK in `ls $DATA_PATH/emptybot/*.png`
+do
+  fichier=`basename $BLOCK`
+  touch -t $date $DATA_PATH/*/$fichier
+done
+
 # Effacer ce qui trop vieux
 if [ "$#" -eq  "0" ]
 then