diff --git a/friendica-clean-database.sh b/friendica-clean-database.sh
index ca35b81..2aa808c 100755
--- a/friendica-clean-database.sh
+++ b/friendica-clean-database.sh
@@ -128,7 +128,6 @@ until [[ "${tmp_post_thread_uri_id_not_in_post_user_q}" -lt "${limit}" ]]; do
 	done < <("${dbengine}" "${db}" -N -B -q -e \
 		"SELECT \`uri-id\` FROM \`post-thread\` WHERE \`uri-id\` NOT IN (SELECT \`uri-id\` FROM \`post-user\`) \
 			AND \`uri-id\` > ${tmp_post_thread_uri_id_not_in_post_user_current_uri_id} ORDER BY \`uri-id\` LIMIT ${limit}")
-
 	final_i=$(($(date +%s) - initial_i))
 	echo "${tmp_post_thread_uri_id_not_in_post_user_q} item(s) deleted until ${tmp_post_thread_uri_id_not_in_post_user_current_uri_id} in ${final_i}s"
 done
@@ -153,7 +152,6 @@ until [[ "${tmp_post_user_uri_id_not_in_post_q}" -lt "${limit}" ]]; do
 	done < <("${dbengine}" "${db}" -N -B -q -e \
 		"SELECT \`uri-id\` FROM \`post-user\` WHERE \`uri-id\` NOT IN (SELECT \`uri-id\` FROM \`post\`) \
 			AND \`uri-id\` > ${tmp_post_user_uri_id_not_in_post_current_uri_id} ORDER BY \`uri-id\` LIMIT ${limit}")
-
 	final_i=$(($(date +%s) - initial_i))
 	echo "${tmp_post_user_uri_id_not_in_post_q} item(s) deleted until ${tmp_post_user_uri_id_not_in_post_current_uri_id} in ${final_i}s"
 done
@@ -239,7 +237,7 @@ until [[ "${tmp_attach_not_in_post_media_q}" -lt "${limit}" ]]; do
 	done < <("${dbengine}" "${db}" -N -B -q -e \
 		"SELECT \`id\` FROM \`attach\` WHERE \`id\` NOT IN (SELECT \`attach-id\` FROM \`post-media\`) \
 		AND \`id\` > ${tmp_attach_not_in_post_media_current_id} ORDER BY \`id\` LIMIT ${limit}")
-
+	"${dbengine}" "${db}" -N -B -q -e "ALTER TABLE \`attach\` AUTO_INCREMENT = 1"
 	final_i=$(($(date +%s) - initial_i))
 	echo "${tmp_attach_not_in_post_media_q} item(s) deleted until ${tmp_attach_not_in_post_media_current_id} in ${final_i}s"
 done
@@ -363,6 +361,9 @@ if [[ "${intense_optimizations}" -gt 0 ]]; then
 	done
 	wait
 
+	"${dbengine}" "${db}" -N -B -q -e "ALTER TABLE \`post-user\` AUTO_INCREMENT = 1; ALTER TABLE \`post\` AUTO_INCREMENT = 1; ALTER TABLE \`post-content\` AUTO_INCREMENT = 1; \
+		ALTER TABLE \`post-thread\` AUTO_INCREMENT = 1; ALTER TABLE \`item-uri\` AUTO_INCREMENT = 1; ALTER TABLE \`post-media\` AUTO_INCREMENT = 1;"
+
 	"${dboptimizer}" "${db}" #&> /dev/null
 fi
 bash -c "cd ${folder} && sudo -u ${user} ${phpversion} bin/console.php maintenance 0" #&> /dev/null
diff --git a/friendica-delete-old-users.sh b/friendica-delete-old-users.sh
index e03a1d7..44a7a00 100755
--- a/friendica-delete-old-users.sh
+++ b/friendica-delete-old-users.sh
@@ -50,5 +50,13 @@ if [[ -n $(type curl) && -n "${dbengine}" && -n $(type "${dbengine}") && -n $(ty
 				wait -n
 			fi
 		done
+		wait
+			"${dbengine}" "${db}" -N -B -q -e "alter table \`post-thread\` auto_increment = 1"
+	"${dbengine}" "${db}" -N -B -q -e "alter table \`post-thread-user\` auto_increment = 1"
+	"${dbengine}" "${db}" -N -B -q -e "alter table \`post-user\` auto_increment = 1"
+	"${dbengine}" "${db}" -N -B -q -e "alter table \`post-tag\` auto_increment = 1"
+	"${dbengine}" "${db}" -N -B -q -e "alter table \`post\` auto_increment = 1"
+	"${dbengine}" "${db}" -N -B -q -e "alter table \`photo\` auto_increment = 1"
+	"${dbengine}" "${db}" -N -B -q -e "alter table \`contact\` auto_increment = 1"
 	date
 fi