diff --git a/api/filtering/db_custom_filters.py b/api/filtering/db_custom_filters.py
index 656bfecd0..9a7ed2afb 100644
--- a/api/filtering/db_custom_filters.py
+++ b/api/filtering/db_custom_filters.py
@@ -29,7 +29,7 @@ def __init__(self, name="", comparator="", version=None):
         os_names = get_valid_os_names()
 
         try:
-            if name and name.lower() not in [name.lower() for name in os_names]:
+            if not name or name.lower() not in [name.lower() for name in os_names]:
                 raise ValidationException(f"operating_system filter only supports these OS names: {os_names}.")
 
             if version is None:
@@ -140,7 +140,7 @@ def separate_operating_system_filters(filter_url_params) -> list[OsFilter]:
     # filter_url_params is a dict
     for filter_key in filter_url_params.keys():
         if filter_key == "name":
-            ((os_comparator, os_name),) = filter_url_params["name"].items()
+            ((os_comparator, os_name),) = filter_url_params[filter_key].items()
             version_node = {os_comparator: [None]}
         else:
             os_name = filter_key
@@ -174,7 +174,7 @@ def build_operating_system_filter(filter_param: dict) -> tuple:
             # Uses the comparator with None, resulting in either is_(None) or is_not(None)
             os_filter_list.append(os_field.astext.operate(comparator, None))
 
-        elif os_filter.comparator in ["eq", "neq"]:
+        elif os_filter.comparator in ["eq", "neq", "ne"]:
             os_filters = [
                 func.lower(os_field["name"].astext).operate(comparator, os_filter.name.lower()),
             ]