diff --git a/scripts/install b/scripts/install
index 6687c23..2caf193 100755
--- a/scripts/install
+++ b/scripts/install
@@ -91,6 +91,9 @@ ynh_setup_source --dest_dir="$final_path"
 chmod 750 "$final_path"
 chmod -R o-rwx "$final_path"
 chown -R $app:www-data "$final_path"
+chmod 755 "$final_path/limesurvey/tmp"
+chmod 755 "$final_path/limesurvey/upload"
+chmod 755 "$final_path/limesurvey/application/config/"
 
 #=================================================
 # NGINX CONFIGURATION