diff --git a/machine-learning-ex7/ex7/recoverData.m b/machine-learning-ex7/ex7/recoverData.m
index da277f5..1ec269c 100644
--- a/machine-learning-ex7/ex7/recoverData.m
+++ b/machine-learning-ex7/ex7/recoverData.m
@@ -21,6 +21,9 @@ X_rec = zeros(size(Z, 1), size(U, 1));
 %               Notice that U(j, 1:K) is a row vector.
 %               
 
+U_reduce = U(:, 1:K);
+
+X_rec = Z * U_reduce';
 
 
 % =============================================================
diff --git a/machine-learning-ex7/ex7/token.mat b/machine-learning-ex7/ex7/token.mat
index 73b4b90..04b7146 100644
Binary files a/machine-learning-ex7/ex7/token.mat and b/machine-learning-ex7/ex7/token.mat differ