diff --git a/06-ml_algos/boosting-algorithms.md b/06-ml_algos/boosting-algorithms.md
index f7ccdab..9a01f28 100644
--- a/06-ml_algos/boosting-algorithms.md
+++ b/06-ml_algos/boosting-algorithms.md
@@ -60,7 +60,7 @@ model = GradientBoostingRegressor(n_estimators = 5, random_state = 42)
 
 model.fit(X_train, y_train)
 
-y_pred = model.predict(y_test)
+y_pred = model.predict(X_test)
 ```
 
 ### Model hyperparameterization