diff --git a/src/_zkapauthorizer/_storage_server.py b/src/_zkapauthorizer/_storage_server.py
index 4ded5af49bd5cbb05586126a86d945a05e9a675b..6d0e3144e1446a1b1d2711993900609413ef11a7 100644
--- a/src/_zkapauthorizer/_storage_server.py
+++ b/src/_zkapauthorizer/_storage_server.py
@@ -201,7 +201,7 @@ class ZKAPAuthorizerStorageServer(Referenceable):
     )
     _metric_spending_successes = attr.ib(init=False)
 
-    def _get_buckets(self):
+    def _get_spending_histogram_buckets(self):
         """
         Create the upper bounds for the ZKAP spending histogram.
         """
@@ -227,7 +227,7 @@ class ZKAPAuthorizerStorageServer(Referenceable):
             "zkapauthorizer_server_spending_successes",
             "ZKAP Spending Successes histogram",
             registry=self._registry,
-            buckets=self._get_buckets(),
+            buckets=self._get_spending_histogram_buckets(),
         )
 
     def _clear_metrics(self):
diff --git a/src/_zkapauthorizer/tests/test_storage_server.py b/src/_zkapauthorizer/tests/test_storage_server.py
index 08bbc1762739e2d47151ca2a3d7dc939b950cdda..84f852aa676efd27e08c7037572b25f1c2dba389 100644
--- a/src/_zkapauthorizer/tests/test_storage_server.py
+++ b/src/_zkapauthorizer/tests/test_storage_server.py
@@ -145,7 +145,7 @@ def read_count(storage_server):
 
 
 def read_bucket(storage_server, size):
-    bounds = storage_server._get_buckets()
+    bounds = storage_server._get_spending_histogram_buckets()
     for bucket_number, upper_bound in enumerate(bounds):
         if size <= upper_bound:
             break