diff --git a/manila/share/api.py b/manila/share/api.py
index 362ae5eb3c..8a7a11ad9c 100644
--- a/manila/share/api.py
+++ b/manila/share/api.py
@@ -1006,10 +1006,11 @@ class API(base.Base):
                 msg = ("Quota exceeded for %(s_pid)s, tried to create "
                        "%(s_size)sG snapshot (%(d_consumed)dG of "
                        "%(d_quota)dG already consumed).")
-                LOG.warning(msg, {'s_pid': context.project_id,
-                                  's_size': size,
-                                  'd_consumed': _consumed('gigabytes'),
-                                  'd_quota': quotas['snapshot_gigabytes']})
+                LOG.warning(msg, {
+                    's_pid': context.project_id,
+                    's_size': size,
+                    'd_consumed': _consumed('snapshot_gigabytes'),
+                    'd_quota': quotas['snapshot_gigabytes']})
                 raise exception.SnapshotSizeExceedsAvailableQuota()
             elif 'snapshots' in overs:
                 msg = ("Quota exceeded for %(s_pid)s, tried to create "
diff --git a/manila/tests/share/test_api.py b/manila/tests/share/test_api.py
index 4b0f1257d7..459d201117 100644
--- a/manila/tests/share/test_api.py
+++ b/manila/tests/share/test_api.py
@@ -1098,7 +1098,7 @@ class ShareAPITestCase(test.TestCase):
         share = fakes.fake_share(
             id=uuidutils.generate_uuid(), size=1, project_id='fake_project',
             user_id='fake_user', has_replicas=False, status='available')
-        usages = {'gigabytes': {'reserved': 10, 'in_use': 0}}
+        usages = {'snapshot_gigabytes': {'reserved': 10, 'in_use': 0}}
         quotas = {'snapshot_gigabytes': 10}
         side_effect = exception.OverQuota(
             overs='snapshot_gigabytes', usages=usages, quotas=quotas)
diff --git a/releasenotes/notes/bug-1859775-snapshot-over-quota-exception-bb6691612af03ddf.yaml b/releasenotes/notes/bug-1859775-snapshot-over-quota-exception-bb6691612af03ddf.yaml
new file mode 100644
index 0000000000..dea2f596f8
--- /dev/null
+++ b/releasenotes/notes/bug-1859775-snapshot-over-quota-exception-bb6691612af03ddf.yaml
@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    Fixed Quota exceeded exception for snapshot creation. Consumed gigabytes
+    now reports the snapshot gigabytes instead of share gigabytes usage.