diff --git a/docs/tutorials/03_quantum_kernel.ipynb b/docs/tutorials/03_quantum_kernel.ipynb
index f6598c954..5380bfa5f 100644
--- a/docs/tutorials/03_quantum_kernel.ipynb
+++ b/docs/tutorials/03_quantum_kernel.ipynb
@@ -724,7 +724,7 @@
    "outputs": [],
    "source": [
     "matrix_train = qpca_kernel.evaluate(x_vec=train_features)\n",
-    "matrix_test = qpca_kernel.evaluate(x_vec=test_features, y_vec=test_features)"
+    "matrix_test = qpca_kernel.evaluate(x_vec=test_features, y_vec=train_features)"
    ]
   },
   {
@@ -755,7 +755,7 @@
     "\n",
     "kernel_pca_q = KernelPCA(n_components=2, kernel=\"precomputed\")\n",
     "train_features_q = kernel_pca_q.fit_transform(matrix_train)\n",
-    "test_features_q = kernel_pca_q.fit_transform(matrix_test)"
+    "test_features_q = kernel_pca_q.transform(matrix_test)"
    ]
   },
   {
@@ -774,7 +774,7 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "Logistic regression score: 1.0\n"
+      "Logistic regression score: 0.9\n"
      ]
     }
    ],