diff --git a/src/apps/competitions/admin.py b/src/apps/competitions/admin.py
index 98cb64147..dc5f489c0 100644
--- a/src/apps/competitions/admin.py
+++ b/src/apps/competitions/admin.py
@@ -25,6 +25,10 @@ def choices(self, changelist):
         )
         yield all_choice
 
+    def get_facet_counts(self, pk_attname, filtered_qs):
+        # Text-input filters have no predefined choices to count (Django 5.0+ facets).
+        return {}
+
 
 class SubmissionsCountFilter(InputFilter):
     # Human-readable title which will be displayed in the
diff --git a/src/apps/profiles/admin.py b/src/apps/profiles/admin.py
index a3ad7bfe8..4a9ba7ca5 100644
--- a/src/apps/profiles/admin.py
+++ b/src/apps/profiles/admin.py
@@ -25,6 +25,10 @@ def choices(self, changelist):
         )
         yield all_choice
 
+    def get_facet_counts(self, pk_attname, filtered_qs):
+        # Text-input filters have no predefined choices to count (Django 5.0+ facets).
+        return {}
+
 
 class QuotaFilter(InputFilter):
     # Human-readable title which will be displayed in the