diff --git a/tensorpack/coupled.py b/tensorpack/coupled.py
index c4ad3f8..054200f 100644
--- a/tensorpack/coupled.py
+++ b/tensorpack/coupled.py
@@ -62,7 +62,7 @@ def initialize(self, method="svd", verbose=False):
         # wipe off old values
         self.x["_Weight_"][:] = np.ones_like(self.x["_Weight_"])
         for mmode in self.modes:
-            self.x["_" + mmode][:] = np.zeros_like(self.x["_" + mmode])
+            self.x["_" + mmode][:] = np.ones_like(self.x["_" + mmode])
 
         if method == "ones":
             for mmode in self.modes: