diff --git a/octoprint_filamentmanager/api/__init__.py b/octoprint_filamentmanager/api/__init__.py
index deccb62..da850b3 100644
--- a/octoprint_filamentmanager/api/__init__.py
+++ b/octoprint_filamentmanager/api/__init__.py
@@ -323,9 +323,13 @@ def export_data(self):
         archive_name = "filament_export_{timestamp}.zip".format(timestamp=timestamp)
 
         def file_generator():
-            with open(archive_path) as f:
-                for c in f:
-                    yield c
+            with open(archive_path, "rb") as f:
+                while True:
+                    chunk = f.read()
+                    if chunk:
+                        yield(chunk)
+                    else:
+                        break
             try:
                 os.remove(archive_path)
             except Exception as e:
diff --git a/setup.py b/setup.py
index 2bc946e..82ee0a3 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 plugin_identifier = "filamentmanager"
 plugin_package = "octoprint_filamentmanager"
 plugin_name = "OctoPrint-FilamentManager"
-plugin_version = "1.6.0"
+plugin_version = "1.6.1"
 plugin_description = "Manage your spools and keep track of remaining filament on them"
 plugin_author = "Sven Lohrmann, Olli"
 plugin_author_email = "ollisgit@gmail.com, malnvenshorn@gmail.com"