diff --git a/labware/microplates.py b/labware/microplates.py
index 858591aa1b5..792feff0d0e 100644
--- a/labware/microplates.py
+++ b/labware/microplates.py
@@ -2,7 +2,7 @@
 from .liquids import LiquidContainer, LiquidWell
 
 
-class Microplate(GridContainer, LiquidContainer):
+class Microplate(GridContainer):
     rows     =   8
     cols     =  12
     volume   = 100
@@ -17,6 +17,8 @@ class Microplate(GridContainer, LiquidContainer):
     a1_y     =  11.24
     spacing  =   9
 
+    child_class = LiquidWell
+
     def well(self, position):
         return self.get_child(position)