diff --git a/tests/conftest.py b/tests/conftest.py
index e117c63..8291877 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -134,7 +134,7 @@ def sites(db_session):
 def generation_db_values(db_session, sites, init_timestamp):
     """Create some fake generations"""
 
-    n = 20*25  # 25 hours of readings
+    n = 450  # 22.5 hours of readings
     start_times = [init_timestamp - dt.timedelta(minutes=x * 3) for x in range(n)]
 
     # remove some of the most recent readings (to simulate missing timestamps)
diff --git a/tests/test_adjuster.py b/tests/test_adjuster.py
index e463592..50a6859 100644
--- a/tests/test_adjuster.py
+++ b/tests/test_adjuster.py
@@ -94,7 +94,7 @@ def test_adjust_forecast_with_adjuster(db_session, sites, generation_db_values,
     assert len(forecast_values_df) == 5
     assert forecast_values_df["forecast_power_kw"][0:4].sum() == 10
     assert forecast_values_df["forecast_power_kw"][4] != 5
-    # note the way the tests are setup, only the horizon_minutes=1200 has some ME values
+    # note the way the tests are setup, only the horizon_minutes=90 has some ME values
 
 
 def test_adjust_forecast_with_adjuster_no_values(db_session, sites):