diff --git a/amy/extrequests/filters.py b/amy/extrequests/filters.py
index 2ebc636df..e8d38a1c2 100644
--- a/amy/extrequests/filters.py
+++ b/amy/extrequests/filters.py
@@ -7,7 +7,7 @@
 import django_filters
 
 from extrequests.models import SelfOrganisedSubmission, WorkshopInquiryRequest
-from extrequests.utils import get_eventbrite_id_from_url
+from extrequests.utils import get_eventbrite_id_from_url_or_return_input
 from workshops.fields import Select2Widget
 from workshops.filters import (
     AllCountriesFilter,
@@ -167,13 +167,19 @@ def filter_non_null_manual_score(self, queryset, name, manual_score):
     def filter_eventbrite_id(
         self, queryset: QuerySet, name: str, value: str
     ) -> QuerySet:
-        # user may input the event's ID or its full URL
-        # events have multiple possible URLs which all contain the ID,
-        # so filter by the ID if possible
+        """
+        Returns the queryset filtered by an Eventbrite ID or URL.
+        Events have multiple possible URLs which all contain the ID, so
+        if a URL is used, the filter will try to extract and filter by the ID.
+        If no ID can be found, the filter will use the original input.
+        """
+
         try:
+            # if input is an integer, assume it to be a partial or full Eventbrite ID
             int(value)
         except ValueError:
-            value = get_eventbrite_id_from_url(value)
+            # otherwise, try to extract an ID from the input
+            value = get_eventbrite_id_from_url_or_return_input(value)
 
         return queryset.filter(eventbrite_url__icontains=value)
 
diff --git a/amy/extrequests/templatetags/eventbrite.py b/amy/extrequests/templatetags/eventbrite.py
index dd5f42d97..e27c0beff 100644
--- a/amy/extrequests/templatetags/eventbrite.py
+++ b/amy/extrequests/templatetags/eventbrite.py
@@ -1,10 +1,10 @@
 from django import template
 
-from extrequests.utils import get_eventbrite_id_from_url
+from extrequests.utils import get_eventbrite_id_from_url_or_return_input
 
 register = template.Library()
 
 
 @register.simple_tag
 def eventbrite_id_from_url(url: str) -> str:
-    return get_eventbrite_id_from_url(url)
+    return get_eventbrite_id_from_url_or_return_input(url)
diff --git a/amy/extrequests/tests/test_utils.py b/amy/extrequests/tests/test_utils.py
index 848aca7b7..b0289ac6f 100644
--- a/amy/extrequests/tests/test_utils.py
+++ b/amy/extrequests/tests/test_utils.py
@@ -4,7 +4,7 @@
 
 from extrequests.utils import (
     MemberCodeValidationError,
-    get_eventbrite_id_from_url,
+    get_eventbrite_id_from_url_or_return_input,
     get_membership_or_none_from_code,
     member_code_valid,
     member_code_valid_training,
@@ -294,7 +294,7 @@ def test_long_url(self):
         url = "https://www.eventbrite.com/e/online-instructor-training-7-8-november-2023-tickets-711575811407?aff=oddtdtcreator"  # noqa: line too long
 
         # Act
-        result = get_eventbrite_id_from_url(url)
+        result = get_eventbrite_id_from_url_or_return_input(url)
 
         # Assert
         self.assertEqual(result, "711575811407")
@@ -304,7 +304,7 @@ def test_short_url(self):
         url = "https://www.eventbrite.com/e/711575811407"
 
         # Act
-        result = get_eventbrite_id_from_url(url)
+        result = get_eventbrite_id_from_url_or_return_input(url)
 
         # Assert
         self.assertEqual(result, "711575811407")
@@ -314,7 +314,7 @@ def test_admin_url(self):
         url = "https://www.eventbrite.com/myevent?eid=711575811407"
 
         # Act
-        result = get_eventbrite_id_from_url(url)
+        result = get_eventbrite_id_from_url_or_return_input(url)
 
         # Assert
         self.assertEqual(result, "711575811407")
diff --git a/amy/extrequests/utils.py b/amy/extrequests/utils.py
index 45badbbfb..2b4033172 100644
--- a/amy/extrequests/utils.py
+++ b/amy/extrequests/utils.py
@@ -82,11 +82,8 @@ def get_membership_or_none_from_code(code: str) -> Membership | None:
         return None
 
 
-def get_eventbrite_id_from_url(url: str) -> str:
+def get_eventbrite_id_from_url_or_return_input(url: str) -> str:
     """Given the URL for an Eventbrite event, returns that event's ID.
-    If the ID can't be found, returns the original URL."""
-    if not isinstance(url, str):
-        return url
-
+    If the ID can't be found, returns the input URL."""
     match = re.search(EVENTBRITE_ID_PATTERN, url)
     return match.group() if match else url