diff --git a/api/filters.py b/api/filters.py
index f1b1bcf1..911918c6 100644
--- a/api/filters.py
+++ b/api/filters.py
@@ -81,8 +81,8 @@ class NoteFilter(TimeFieldFilter, TagsFieldFilter):
         model = models.Note
 
 
-class PumpingFilter(TimeFieldFilter):
-    class Meta(TimeFieldFilter.Meta):
+class PumpingFilter(StartEndFieldFilter):
+    class Meta(StartEndFieldFilter.Meta):
         model = models.Pumping