diff --git a/bazarr/app/config.py b/bazarr/app/config.py
index cf28db8f1..4f2b34cef 100644
--- a/bazarr/app/config.py
+++ b/bazarr/app/config.py
@@ -95,6 +95,7 @@ def check_parser_binary(value):
     Validator('general.use_postprocessing_threshold_movie', must_exist=True, default=False, is_type_of=bool),
     Validator('general.use_sonarr', must_exist=True, default=False, is_type_of=bool),
     Validator('general.use_radarr', must_exist=True, default=False, is_type_of=bool),
+    Validator('general.use_plex', must_exist=True, default=False, is_type_of=bool),
     Validator('general.path_mappings_movie', must_exist=True, default=[], is_type_of=list),
     Validator('general.serie_tag_enabled', must_exist=True, default=False, is_type_of=bool),
     Validator('general.movie_tag_enabled', must_exist=True, default=False, is_type_of=bool),