diff --git a/train_model.py b/train_model.py
index 9aee84b..5b6a642 100644
--- a/train_model.py
+++ b/train_model.py
@@ -165,7 +165,7 @@ def evaluate_monte_carlo(model, repeats):
                 i += BATCH_SIZE
                 inner_bar.update(2 * BATCH_SIZE)
             outer_bar.update(1)
-        with open('results.txt') as r:
+        with open('results.txt', 'w+') as r:
             print("Average estimation error " + str(diff.item() / i))
             r.write("Average estimation error " + str(diff.item() / i)+"\n")