diff --git a/fluents/lib/engines.py b/fluents/lib/engines.py
index 508027d..53cf711 100644
--- a/fluents/lib/engines.py
+++ b/fluents/lib/engines.py
@@ -93,7 +93,7 @@ def pls(a, b, aopt=2, scale='scores', mode='normal', ab=None):
         ab = dot(a.T, b)
     for i in range(aopt):
         if ab.shape[1]==1:
-            w = ab.reshape(mm, l)
+            w = ab.reshape(n, l)
         else:
             u, s, vh = svd(dot(ab.T, ab))
             w = dot(ab, u[:,:1])
@@ -246,7 +246,7 @@ def esvd(data,economy=1):
             s[i] = norm(u[:,i])
             u[:,i] = u[:,i]/s[i]
     else:
-        u, s, vt = svd(data, data.T)
+        u, s, vt = svd(dot(data, data.T))
         v = dot(u.T, data)
         for i in xrange(m):
             s[i] = norm(v[i,:])