diff --git a/scripts/upgrade b/scripts/upgrade
index a0b7e5d..adf36be 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -93,6 +93,13 @@ then
 
 	# Download, check integrity, uncompress and patch the source from app.src
 	ynh_setup_source --dest_dir="$final_path"
+
+	# Remove unused directories or files from older release
+	ynh_secure_remove --file="$final_path/aide.svg"
+	ynh_secure_remove --file="$final_path/favicons"
+	ynh_secure_remove --file="$final_path/parinux.png"
+	ynh_secure_remove --file="$final_path/phpqrcode"
+	ynh_secure_remove --file="$final_path/ubuntu-dl.ttf"
 fi
 
 #=================================================