diff --git a/agent_based/curl.py b/agent_based/curl.py
index 19bd5a5b65668e66a3e8ac3684446f0b0da27728..d5563422f08802adcb14eb4f091305a68f0fe4a4 100644
--- a/agent_based/curl.py
+++ b/agent_based/curl.py
@@ -27,6 +27,7 @@
 # 2022-04-06: removed .replace('://', ': //'))  from json.loads() so service name is without space
 # 2022-04-26: made http(s) URLs clickable
 # 2022-05-15: added workaround for raise ValueError("Cannot render negative timespan")
+# 2022-05-17: fixed wrong import path for  _TIME_UNITS and _gen_timespan_chunks
 #
 
 # Example output from agent:
@@ -81,7 +82,7 @@ from cmk.base.plugins.agent_based.agent_based_api.v1 import (
 #
 # start workaround for :  raise ValueError("Cannot render negative timespan")
 #
-from cmk.base.plugins.agent_based.agent_based_api.v1.render import (
+from cmk.base.api.agent_based.render import (
     _TIME_UNITS,
     _gen_timespan_chunks,
 )
diff --git a/curl.mkp b/curl.mkp
index 7d2cb034671bf9523285f562bea3dfa1581441a3..8a38d4db2aaadcc599b9392c916fd4727df5c172 100644
Binary files a/curl.mkp and b/curl.mkp differ
diff --git a/packages/curl b/packages/curl
index b8df7912d5737c199429248b7342009d4fdc4eb5..84453ca91784da2657f9a96f69432ed52986a965 100644
--- a/packages/curl
+++ b/packages/curl
@@ -26,7 +26,7 @@
  'name': 'curl',
  'num_files': 6,
  'title': 'cURL agent plugin',
- 'version': '20220515.v0.1.8b',
+ 'version': '20220515.v0.1.8c',
  'version.min_required': '2.0.0',
  'version.packaged': '2021.09.20',
  'version.usable_until': None}
\ No newline at end of file
diff --git a/web/plugins/metrics/curl.py b/web/plugins/metrics/curl.py
index e453b53ed7d0181d4a35c8b461af5237ea683df0..2ce2a0b3f89a1ad980054e9802df84b34361f808 100644
--- a/web/plugins/metrics/curl.py
+++ b/web/plugins/metrics/curl.py
@@ -12,6 +12,7 @@
 # 2022-02-15: rewritten form cmk 2.0, based on the work by doc[at]snowheaven[dot]de
 # 2022-02-20: added num_connects, num_redirects, size_download, size_header and speed_download
 # 2022-03-13: moved cert time left graph to the end of graphs
+# 2022-05-17: added scalars to cert_time_left
 
 from cmk.gui.i18n import _
 
@@ -193,6 +194,10 @@ graph_info['curl_cert_time'] = {
     'metrics': [
         ('cert_time_left', 'area'),
     ],
+    'scalars': [
+        ('cert_time_left:crit', _('crit')),
+        ('cert_time_left:warn', _('warn')),
+    ],
 }
 
 perfometer_info.append(