diff --git a/zipline/finance/performance/position.py b/zipline/finance/performance/position.py
index 2daf0039..155d019b 100644
--- a/zipline/finance/performance/position.py
+++ b/zipline/finance/performance/position.py
@@ -82,20 +82,18 @@ class Position(object):
         payment_owed = zp.dividend_payment(out)
         return payment_owed
 
-    def handle_split(self, split):
+    def handle_split(self, sid, ratio):
         """
         Update the position by the split ratio, and return the resulting
         fractional share that will be converted into cash.
 
         Returns the unused cash.
         """
-        if self.sid != split.sid:
+        if self.sid != sid:
             raise Exception("updating split with the wrong sid!")
 
-        ratio = split.ratio
-
-        log.info("handling split for sid = " + str(split.sid) +
-                 ", ratio = " + str(split.ratio))
+        log.info("handling split for sid = " + str(sid) +
+                 ", ratio = " + str(ratio))
         log.info("before split: " + str(self))
 
         # adjust the # of shares by the ratio
diff --git a/zipline/finance/performance/position_tracker.py b/zipline/finance/performance/position_tracker.py
index 6ef069ad..04e3b276 100644
--- a/zipline/finance/performance/position_tracker.py
+++ b/zipline/finance/performance/position_tracker.py
@@ -327,7 +327,7 @@ class PositionTracker(object):
             # Make the position object handle the split. It returns the
             # leftover cash from a fractional share, if there is any.
             position = self.positions[split.sid]
-            leftover_cash = position.handle_split(split)
+            leftover_cash = position.handle_split(split.sid, split.ratio)
             self._update_asset(split.sid)
             return leftover_cash