diff --git a/src/freedombone-upgrade b/src/freedombone-upgrade
index 9af84589..1d1f963c 100755
--- a/src/freedombone-upgrade
+++ b/src/freedombone-upgrade
@@ -43,6 +43,9 @@ FRIENDS_MIRRORS_PASSWORD=
 MY_MIRRORS_PASSWORD=
 CURRENT_BRANCH=master
 
+# clear temporary files
+rm -rf /tmp/*
+
 UTILS_FILES=/usr/share/${PROJECT_NAME}/utils/${PROJECT_NAME}-utils-*
 for f in $UTILS_FILES
 do