diff --git a/README.md b/README.md
index d5d81ee..473d6df 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ model.fit([x_train, y_train],
           batch_size=batch_size,
           epochs=epochs,
           verbose=1,
-          validation_data=(x_test, y_test),
+          validation_data=([x_test, y_test], y_test),
           callbacks=[ModelCheckpoint('model.hdf5',
                      verbose=1, save_best_only=True)])
 ```