diff --git a/boxtree/distributed/__init__.py b/boxtree/distributed/__init__.py
index b2c9d19d..4883c496 100644
--- a/boxtree/distributed/__init__.py
+++ b/boxtree/distributed/__init__.py
@@ -217,7 +217,8 @@ def make_distributed_wrangler(
             # TODO: should replace the default calibration params with a more
             # accurate one
             warnings.warn("Calibration parameters for the cost model are not "
-                        "supplied. The default one will be used.")
+                          "supplied. The default one will be used.",
+                          stacklevel=2)
             calibration_params = \
                 FMMCostModel.get_unit_calibration_params()
 
diff --git a/boxtree/tree.py b/boxtree/tree.py
index 76d620e1..3115bee4 100644
--- a/boxtree/tree.py
+++ b/boxtree/tree.py
@@ -1191,7 +1191,7 @@ def filter_target_lists_in_user_order(queue, tree, flags):
             "filter_target_lists_in_user_order() is deprecated and will go "
             "away in a future release. Use "
             "ParticleListFilter.filter_target_lists_in_user_order() instead.",
-            DeprecationWarning)
+            DeprecationWarning, stacklevel=2)
 
     return (ParticleListFilter(queue.context)
             .filter_target_lists_in_user_order(queue, tree, flags))
@@ -1206,7 +1206,7 @@ def filter_target_lists_in_tree_order(queue, tree, flags):
             "filter_target_lists_in_tree_order() is deprecated and will go "
             "away in a future release. Use "
             "ParticleListFilter.filter_target_lists_in_tree_order() instead.",
-            DeprecationWarning)
+            DeprecationWarning, stacklevel=2)
 
     return (ParticleListFilter(queue.context)
             .filter_target_lists_in_tree_order(queue, tree, flags))
diff --git a/boxtree/tree_of_boxes.py b/boxtree/tree_of_boxes.py
index 7ca96425..425466af 100644
--- a/boxtree/tree_of_boxes.py
+++ b/boxtree/tree_of_boxes.py
@@ -223,7 +223,7 @@ def _apply_coarsen_flags(coarsen_flags, tob, error_on_ignored_flags=True):
             raise RuntimeError(msg)
         else:
             import warnings
-            warnings.warn(msg)
+            warnings.warn(msg, stacklevel=3)
 
     # deleted boxes are marked as:
     # level = inf
diff --git a/test/test_fmm.py b/test/test_fmm.py
index 28c2f359..f66af872 100644
--- a/test/test_fmm.py
+++ b/test/test_fmm.py
@@ -482,7 +482,7 @@ def fmm_level_to_order(tree, lev):
         have_sumpy = False
         from warnings import warn
         warn("sumpy unavailable: cannot compute independent reference "
-                "values for pyfmmlib")
+                "values for pyfmmlib", stacklevel=1)
     else:
         have_sumpy = True