diff --git a/pyfstat/grid_based_searches.py b/pyfstat/grid_based_searches.py
index 3557bee0b7ff204d801a182033b546c8a04b48aa..1daa55d7ffb96aee7adc40b8fc2b123ebbcb049e 100644
--- a/pyfstat/grid_based_searches.py
+++ b/pyfstat/grid_based_searches.py
@@ -683,6 +683,10 @@ class EarthTest(GridSearch):
 
         For all other parameters, see `pyfstat.ComputeFStat` for details
         """
+        self.transientWindowType = None
+        self.t0Band = None
+        self.tauBand = None
+
         if os.path.isdir(outdir) is False:
             os.mkdir(outdir)
         self.nsegs = 1