diff --git a/model_regresji_liniowej.ipynb b/model_regresji_liniowej.ipynb
index e3d8e78..ad5a4b1 100644
--- a/model_regresji_liniowej.ipynb
+++ b/model_regresji_liniowej.ipynb
@@ -500,7 +500,7 @@
     "y_train = train_dataset[[0]]\n",
     "\n",
     "scaler = StandardScaler()\n",
-    "trans_data = scaler.fit_transform(X)"
+    "trans_data = scaler.fit_transform(X_train)"
    ]
   },
   {