diff --git a/btk/draw_blends.py b/btk/draw_blends.py
index 5c8622f20..10aa3c016 100644
--- a/btk/draw_blends.py
+++ b/btk/draw_blends.py
@@ -36,7 +36,9 @@ def get_center_in_pixels(blend_catalog, wcs):
     Returns:
         `astropy.table.Column`: x and y coordinates of object centroid
     """
-    x_peak, y_peak = wcs.all_world2pix(blend_catalog["ra"] / 3600, blend_catalog["dec"] / 3600, 0)
+    x_peak, y_peak = wcs.world_to_pixel_values(
+        blend_catalog["ra"] / 3600, blend_catalog["dec"] / 3600
+    )
     dx_col = Column(x_peak, name="x_peak")
     dy_col = Column(y_peak, name="y_peak")
     return dx_col, dy_col
diff --git a/tests/test_draw.py b/tests/test_draw.py
index 8971b35e7..a68339afc 100644
--- a/tests/test_draw.py
+++ b/tests/test_draw.py
@@ -164,7 +164,7 @@ def test_default(self, mock_show):
         self.match_background_noise(draw_output["blend_images"])
 
     def test_basic_sampling(self):
-        sampling_function = btk.sampling_functions.BasicSamplingFunction()
+        sampling_function = btk.sampling_functions.BasicSampling()
         draw_generator = get_draw_generator(
             fixed_parameters=True, sampling_function=sampling_function
         )
diff --git a/tests/test_group_sampling.py b/tests/test_group_sampling.py
index 9f8203710..c8809ff72 100644
--- a/tests/test_group_sampling.py
+++ b/tests/test_group_sampling.py
@@ -3,7 +3,7 @@
 
 from btk.catalog import CatsimCatalog
 from btk.draw_blends import CatsimGenerator
-from btk.sampling_functions import GroupSamplingFunctionNumbered
+from btk.sampling_functions import GroupSamplingNumbered
 from btk.survey import get_surveys
 
 
@@ -18,7 +18,7 @@ def get_group_sampling_draw_generator(batch_size=3):
     pixel_scale = 0.2
     shift = [0.8, -0.7]
     catalog = CatsimCatalog.from_file(catalog_name)
-    sampling_function = GroupSamplingFunctionNumbered(
+    sampling_function = GroupSamplingNumbered(
         max_number, wld_catalog_name, stamp_size, pixel_scale, shift=shift
     )
     draw_blend_generator = CatsimGenerator(