diff --git a/changedetectionio/__init__.py b/changedetectionio/__init__.py
index 6735a566..396b7be0 100644
--- a/changedetectionio/__init__.py
+++ b/changedetectionio/__init__.py
@@ -1043,7 +1043,7 @@ def ticker_thread_check_time_launch_checks():
 
     # Spin up Workers that do the fetching
     # Can be overriden by ENV or use the default settings
-    n_workers = os.getenv("FETCH_WORKERS", datastore.data['settings']['requests']['workers'])
+    n_workers = int(os.getenv("FETCH_WORKERS", datastore.data['settings']['requests']['workers']))
     for _ in range(n_workers):
         new_worker = update_worker.update_worker(update_q, notification_q, app, datastore)
         running_update_threads.append(new_worker)
diff --git a/changedetectionio/content_fetcher.py b/changedetectionio/content_fetcher.py
index 436a652d..890ff65d 100644
--- a/changedetectionio/content_fetcher.py
+++ b/changedetectionio/content_fetcher.py
@@ -120,7 +120,7 @@ class html_webdriver(Fetcher):
         # raise EmptyReply(url=url, status_code=r.status_code)
 
         # @todo - dom wait loaded?
-        time.sleep(os.getenv("WEBDRIVER_DELAY_BEFORE_CONTENT_READY", 5))
+        time.sleep(int(os.getenv("WEBDRIVER_DELAY_BEFORE_CONTENT_READY", 5)))
         self.content = driver.page_source
         self.headers = {}