diff --git a/inkycal/tests/inkycal_todoist_test.py b/inkycal/tests/inkycal_todoist_test.py
index 744c693..c33c08f 100644
--- a/inkycal/tests/inkycal_todoist_test.py
+++ b/inkycal/tests/inkycal_todoist_test.py
@@ -1,50 +1,52 @@
 #!python3
-
+import os
 import unittest
 from inkycal.modules import Todoist as Module
 from helper_functions import *
+
 environment = get_environment()
 
 # Set to True to preview images. Only works on Raspberry Pi OS with Desktop
 use_preview = False
 
-api_key = ""
+api_key = os.environ["TODOIST_API_KEY"] or ""
 
 tests = [
-{
-  "name": "Todoist",
-  "config": {
-      "size": [500 ,200],
-      "api_key": api_key,
-      "project_filter": None,
-      "padding_x": 10,"padding_y": 10,"fontsize": 12,"language": "en"
-    }
-},
+    {
+        "name": "Todoist",
+        "config": {
+            "size": [500, 200],
+            "api_key": api_key,
+            "project_filter": None,
+            "padding_x": 10, "padding_y": 10, "fontsize": 12, "language": "en"
+        }
+    },
 ]
 
+
 class module_test(unittest.TestCase):
 
-  def test_get_config(self):
-    print('getting data for web-ui...', end = "")
-    Module.get_config()
-    print('OK')
-
-  def test_generate_image(self):
-    if api_key:
-      for test in tests:
-        print(f'test {tests.index(test)+1} generating image..')
-        module = Module(test)
-        im_black, im_colour = module.generate_image()
+    def test_get_config(self):
+        print('getting data for web-ui...', end="")
+        Module.get_config()
         print('OK')
-        if use_preview == True and environment == 'Raspberry':
-          preview(merge(im_black, im_colour))
-    else:
-      print('No api key given, omitting test')
+
+    def test_generate_image(self):
+        if api_key:
+            for test in tests:
+                print(f'test {tests.index(test) + 1} generating image..')
+                module = Module(test)
+                im_black, im_colour = module.generate_image()
+                print('OK')
+                if use_preview and environment == 'Raspberry':
+                    preview(merge(im_black, im_colour))
+        else:
+            print('No api key given, omitting test')
+
 
 if __name__ == '__main__':
+    logger = logging.getLogger()
+    logger.level = logging.DEBUG
+    logger.addHandler(logging.StreamHandler(sys.stdout))
 
-  logger = logging.getLogger()
-  logger.level = logging.DEBUG
-  logger.addHandler(logging.StreamHandler(sys.stdout))
-
-  unittest.main()
+    unittest.main()