diff --git a/tests/predict_test.py b/tests/predict_test.py
index fcaa381375dfe1762720cfc9f98d5b71b504e18c..392e4064ed26c3c8b12fbbbb842c5e9f617924bc 100644
--- a/tests/predict_test.py
+++ b/tests/predict_test.py
@@ -29,5 +29,5 @@ def test_on_target_predict_size_guide():
     for pam in pams:
         (pam_val, start_val) = pam
         assert (
-            start_val - pam_val == 2
+            start_val - pam_val == 3
         ), "the difference between start and pam position is different than 2"