diff --git a/core/filters.py b/core/filters.py
index 1fbacc51..5249d09a 100644
--- a/core/filters.py
+++ b/core/filters.py
@@ -24,14 +24,19 @@ logger = logging.getLogger(__name__)
 
 class CaseInsensitiveListFilter(BaseInFilter, CharFilter):
     def filter(self, qs, value):
+        logger.debug("CaseInsensitiveListFilter got value: %s", value)
         if not value:
             return qs
 
+        values = []
+
         if isinstance(value, str):
             values = [v.strip() for v in value.split(',') if v.strip()]
         else:
             values = [v for v in value if v]
 
+        logger.debug("CaseInsensitiveListFilter value splitted: %s", values)
+
         if not values:
             return qs