diff --git a/tests/unit/hooks/test_uptimekuma.py b/tests/unit/hooks/test_uptimekuma.py
index 2ebdecc..a5c3ef5 100644
--- a/tests/unit/hooks/test_uptimekuma.py
+++ b/tests/unit/hooks/test_uptimekuma.py
@@ -3,13 +3,14 @@ from flexmock import flexmock
 import borgmatic.hooks.monitor
 from borgmatic.hooks import uptimekuma as module
 
-DEFAULT_BASE_URL = 'https://example.uptime.kuma/api/push/abcd1234'
-CUSTOM_BASE_URL = 'https://uptime.example.com/api/push/efgh5678'
+DEFAULT_PUSH_URL = 'https://example.uptime.kuma/api/push/abcd1234'
+CUSTOM_PUSH_URL = 'https://uptime.example.com/api/push/efgh5678'
 
 
 def test_ping_monitor_hits_default_uptimekuma_on_fail():
+    hook_config = {}
     flexmock(module.requests).should_receive('get').with_args(
-        f'{DEFAULT_BASE_URL}?status=down&msg=fail'
+        f'{DEFAULT_PUSH_URL}?status=down&msg=fail'
     ).and_return(flexmock(ok=True)).once()
 
     module.ping_monitor(
@@ -23,9 +24,9 @@ def test_ping_monitor_hits_default_uptimekuma_on_fail():
 
 
 def test_ping_monitor_hits_custom_uptimekuma_on_fail():
-    hook_config = {'push_url': push_url}
+    hook_config = {'push_url': CUSTOM_PUSH_URL}
     flexmock(module.requests).should_receive('get').with_args(
-        f'{CUSTOM_BASE_URL}?status=down&msg=fail'
+        f'{CUSTOM_PUSH_URL}?status=down&msg=fail'
     ).and_return(flexmock(ok=True)).once()
 
     module.ping_monitor(
@@ -38,9 +39,9 @@ def test_ping_monitor_hits_custom_uptimekuma_on_fail():
     )
 
 def test_ping_monitor_custom_uptimekuma_on_start():
-    hook_config = {'push_url': push_url}
+    hook_config = {'push_url': CUSTOM_PUSH_URL}
     flexmock(module.requests).should_receive('get').with_args(
-        f'{CUSTOM_BASE_URL}?status=up&msg=start'
+        f'{CUSTOM_PUSH_URL}?status=up&msg=start'
     ).and_return(flexmock(ok=True)).once()
 
     module.ping_monitor(
@@ -53,9 +54,9 @@ def test_ping_monitor_custom_uptimekuma_on_start():
     )
 
 def test_ping_monitor_custom_uptimekuma_on_finish():
-    hook_config = {'push_url': CUSTOM_BASE_URL}
+    hook_config = {'push_url': CUSTOM_PUSH_URL}
     flexmock(module.requests).should_receive('get').with_args(
-        f'{CUSTOM_BASE_URL}?status=up&msg=finish'
+        f'{CUSTOM_PUSH_URL}?status=up&msg=finish'
     ).and_return(flexmock(ok=True)).once()
 
     module.ping_monitor(
@@ -68,7 +69,7 @@ def test_ping_monitor_custom_uptimekuma_on_finish():
     )
 
 def test_ping_monitor_does_not_hit_custom_uptimekuma_on_fail_dry_run():
-    hook_config = {'push_url': CUSTOM_BASE_URL}
+    hook_config = {'push_url': CUSTOM_PUSH_URL}
     flexmock(module.requests).should_receive('get').never()
 
     module.ping_monitor(
@@ -81,7 +82,7 @@ def test_ping_monitor_does_not_hit_custom_uptimekuma_on_fail_dry_run():
     )
 
 def test_ping_monitor_does_not_hit_custom_uptimekuma_on_start_dry_run():
-    hook_config = {'push_url': CUSTOM_BASE_URL}
+    hook_config = {'push_url': CUSTOM_PUSH_URL}
     flexmock(module.requests).should_receive('get').never()
 
     module.ping_monitor(
@@ -94,7 +95,7 @@ def test_ping_monitor_does_not_hit_custom_uptimekuma_on_start_dry_run():
     )
 
 def test_ping_monitor_does_not_hit_custom_uptimekuma_on_finish_dry_run():
-    hook_config = {'push_url': CUSTOM_BASE_URL}
+    hook_config = {'push_url': CUSTOM_PUSH_URL}
     flexmock(module.requests).should_receive('get').never()
 
     module.ping_monitor(
@@ -108,8 +109,9 @@ def test_ping_monitor_does_not_hit_custom_uptimekuma_on_finish_dry_run():
 
 
 def test_ping_monitor_with_connection_error_logs_warning():
+    hook_config = {'push_url': CUSTOM_PUSH_URL}
     flexmock(module.requests).should_receive('get').with_args(
-        f'{DEFAULT_BASE_URL}?status=down&msg=fail'
+        f'{CUSTOM_PUSH_URL}?status=down&msg=fail'
     ).and_raise(module.requests.exceptions.ConnectionError)
     flexmock(module.logger).should_receive('warning').once()
 
@@ -123,12 +125,13 @@ def test_ping_monitor_with_connection_error_logs_warning():
     )
 
 def test_ping_monitor_with_other_error_logs_warning():
+    hook_config = {'push_url': CUSTOM_PUSH_URL}
     response = flexmock(ok=False)
     response.should_receive('raise_for_status').and_raise(
         module.requests.exceptions.RequestException
     )
     flexmock(module.requests).should_receive('post').with_args(
-        f'{DEFAULT_BASE_URL}?status=down&msg=fail'
+        f'{CUSTOM_PUSH_URL}?status=down&msg=fail'
     ).and_return(response)
     flexmock(module.logger).should_receive('warning').once()
 
@@ -142,7 +145,7 @@ def test_ping_monitor_with_other_error_logs_warning():
     )
 
 def test_ping_monitor_with_invalid_run_state():
-    hook_config = {'push_url': CUSTOM_BASE_URL}
+    hook_config = {'push_url': CUSTOM_PUSH_URL}
     flexmock(module.requests).should_receive('get').never()
 
     module.ping_monitor(