diff --git a/vnpy/pricing/crr.py b/vnpy/pricing/crr.py
index 0f80591e..ccb0b8e8 100644
--- a/vnpy/pricing/crr.py
+++ b/vnpy/pricing/crr.py
@@ -78,7 +78,7 @@ def generateTree(f, k, r, t, v, cp, n):
 #----------------------------------------------------------------------
 def calculatePrice(f, k, r, t, v, cp, n=15):
     """计算期权价格"""
-    oTree, uTree = calculatePrice(f, k, r, t, v, cp)
+    oTree, uTree = generateTree(f, k, r, t, v, cp, n)
     return oTree[0, 0]
 
 #----------------------------------------------------------------------