diff --git a/python/paddle/fluid/tests/unittests/test_spectral_norm_op.py b/python/paddle/fluid/tests/unittests/test_spectral_norm_op.py
index 549ed486d710616a8edf4028c94d7ba9642e6a91..81cc38a13184797f3b33de58bc4356267cbad9bc 100644
--- a/python/paddle/fluid/tests/unittests/test_spectral_norm_op.py
+++ b/python/paddle/fluid/tests/unittests/test_spectral_norm_op.py
@@ -29,9 +29,6 @@ def spectral_norm(weight, u, v, dim, power_iters, eps):
     if dim != 0:
         perm = [dim] + [d for d in range(len(shape)) if d != dim]
         weight_mat = weight_mat.transpose(perm)
-        real_shape = weight_mat.shape
-    else:
-        real_shape = shape
     weight_mat = weight_mat.reshape((h, w))
 
     u = u.reshape((h, 1))