diff --git a/gns3server/utils/images.py b/gns3server/utils/images.py
index 5b63e7af..455f21e0 100644
--- a/gns3server/utils/images.py
+++ b/gns3server/utils/images.py
@@ -40,11 +40,11 @@ def scan_for_images(type):
             for file in filenames:
                 path = os.path.join(root, file)
                 if file not in files:
-                    if file.endswith(".md5sum"):
+                    if file.endswith(".md5sum") or file.startswith("."):
                         continue
                     elif (file.endswith(".image") and type == "dynamips") \
-                       or (file.endswith(".bin") and type == "iou") \
-                       or (not file.endswith(".bin") and not file.endswith(".image") and type == "qemu"):
+                            or (file.endswith(".bin") and type == "iou") \
+                            or (not file.endswith(".bin") and not file.endswith(".image") and type == "qemu"):
                         files.add(file)
                         paths.append(path)
     return paths