diff --git a/pyfstat/grid_based_searches.py b/pyfstat/grid_based_searches.py
index 9e23c26e4dff99436226b7c95388cdc4ef229aac..62267a786632c508d38c0d6f5e47d5e0214a2818 100644
--- a/pyfstat/grid_based_searches.py
+++ b/pyfstat/grid_based_searches.py
@@ -22,7 +22,7 @@ class GridSearch(BaseSearchClass):
                  maxStartTime=None, nsegs=1, BSGL=False, minCoverFreq=None,
                  maxCoverFreq=None, earth_ephem=None, sun_ephem=None,
                  detectors=None, SSBprec=None, injectSources=None,
-                 input_arrays=False):
+                 input_arrays=False, assumeSqrtSX=None):
         """
         Parameters
         ----------
@@ -62,7 +62,8 @@ class GridSearch(BaseSearchClass):
                 detectors=self.detectors, transient=False,
                 minStartTime=self.minStartTime, maxStartTime=self.maxStartTime,
                 BSGL=self.BSGL, SSBprec=self.SSBprec,
-                injectSources=self.injectSources)
+                injectSources=self.injectSources,
+                assumeSqrtSX=self.assumeSqrtSX)
             self.search.get_det_stat = self.search.run_computefstatistic_single_point
         else:
             self.search = SemiCoherentSearch(