diff --git a/pyrecest/distributions/hypersphere_subset/abstract_hypersphere_subset_grid_distribution.py b/pyrecest/distributions/hypersphere_subset/abstract_hypersphere_subset_grid_distribution.py
@@ -21,7 +21,7 @@ def __init__(self, grid, grid_values, enforce_pdf_nonnegative=True):
             raise ValueError("Grid size must match number of grid values.")
             
         AbstractGridDistribution.__init__(self, grid_values, grid_type = "unknown", grid=grid, dim=grid.shape[1],  enforce_pdf_nonnegative=enforce_pdf_nonnegative)     
-        AbstractGridDistribution.__init__(self, dim=grid.shape[1])
+        AbstractHypersphereSubsetDistribution.__init__(self, dim=grid.shape[1])
         self.normalize() 
 
     def mean_direction(self):
