diff --git a/src/seismic_hazard_forecasting.py b/src/seismic_hazard_forecasting.py
index 8fae701..d0b0605 100644
--- a/src/seismic_hazard_forecasting.py
+++ b/src/seismic_hazard_forecasting.py
@@ -150,9 +150,9 @@ verbose: {verbose}")
             lat = np.delete(lat, indices)
             lon = np.delete(lon, indices)
 
-        # if user does not provide a m_max, set m_max to 3 magnitude units above max magnitude in catalog
+        # if user does not provide a m_max, set m_max to 1 magnitude unit above max magnitude in catalog
         if m_max == None:
-            m_max = mag.max() + 3.0
+            m_max = mag.max() + 1.0
 
         start = timer()