diff --git a/gwemopt/chipgaps/decam.py b/gwemopt/chipgaps/decam.py
index 5f01ad9..10a9774 100644
--- a/gwemopt/chipgaps/decam.py
+++ b/gwemopt/chipgaps/decam.py
@@ -229,7 +229,9 @@ def get_decam_quadrant_moc(ra, dec, n_threads=None):
         stacked = np.stack((ccd_coords.ra.deg, ccd_coords.dec.deg), axis=1)
         result = stacked.reshape(-1, ccd_coords.ra.deg.shape[1])
         lon_lat_list = [row for row in result]
-        indices = mocpy.from_polygons(lon_lat_list, np.uint8(10), n_threads)
+        indices = mocpy.from_polygons(
+            lon_lat_list, max_depth=np.uint8(10), n_threads=n_threads
+        )
         moc = sum([MOC(index) for index in indices])
         mocs.append(moc)
 
diff --git a/gwemopt/chipgaps/ztf.py b/gwemopt/chipgaps/ztf.py
index 152e8ca..72dd408 100644
--- a/gwemopt/chipgaps/ztf.py
+++ b/gwemopt/chipgaps/ztf.py
@@ -290,7 +290,9 @@ def get_ztf_quadrant_moc(ra, dec, n_threads=None):
         stacked = np.stack((ccd_coords.ra.deg, ccd_coords.dec.deg), axis=1)
         result = stacked.reshape(-1, ccd_coords.ra.deg.shape[1])
         lon_lat_list = [row for row in result]
-        indices = mocpy.from_polygons(lon_lat_list, np.uint8(10), n_threads)
+        indices = mocpy.from_polygons(
+            lon_lat_list, max_depth=np.uint8(10), n_threads=n_threads
+        )
         moc = sum([MOC(index) for index in indices])
         mocs.append(moc)