diff --git a/barbican/values.yaml b/barbican/values.yaml
index 8380638086..153ed194a2 100644
--- a/barbican/values.yaml
+++ b/barbican/values.yaml
@@ -448,7 +448,7 @@ conf:
         - default
     logger_root:
       level: WARNING
-      handlers: null
+      handlers: 'null'
     logger_barbican:
       level: INFO
       handlers:
diff --git a/cinder/values.yaml b/cinder/values.yaml
index 4d9fbc176a..11535f41fa 100644
--- a/cinder/values.yaml
+++ b/cinder/values.yaml
@@ -766,7 +766,7 @@ conf:
         - default
     logger_root:
       level: WARNING
-      handlers: null
+      handlers: 'null'
     logger_cinder:
       level: INFO
       handlers:
diff --git a/congress/values.yaml b/congress/values.yaml
index 8266293968..883b22715c 100644
--- a/congress/values.yaml
+++ b/congress/values.yaml
@@ -381,7 +381,7 @@ conf:
         - default
     logger_root:
       level: WARNING
-      handlers: null
+      handlers: 'null'
     logger_congress:
       level: INFO
       handlers:
diff --git a/glance/values.yaml b/glance/values.yaml
index 8066a912f8..33ae627a3c 100644
--- a/glance/values.yaml
+++ b/glance/values.yaml
@@ -265,7 +265,7 @@ conf:
         - default
     logger_root:
       level: WARNING
-      handlers: null
+      handlers: 'null'
     logger_glance:
       level: INFO
       handlers:
diff --git a/heat/values.yaml b/heat/values.yaml
index ba26b0e326..f49d05799d 100644
--- a/heat/values.yaml
+++ b/heat/values.yaml
@@ -482,7 +482,7 @@ conf:
         - default
     logger_root:
       level: WARNING
-      handlers: null
+      handlers: 'null'
     logger_heat:
       level: INFO
       handlers:
diff --git a/ironic/values.yaml b/ironic/values.yaml
index 2a27e3e10e..3f438b65c4 100644
--- a/ironic/values.yaml
+++ b/ironic/values.yaml
@@ -153,7 +153,7 @@ conf:
         - default
     logger_root:
       level: WARNING
-      handlers: null
+      handlers: 'null'
     logger_ironic:
       level: INFO
       handlers:
diff --git a/keystone/values.yaml b/keystone/values.yaml
index 9b46ec15a4..4dd3953d46 100644
--- a/keystone/values.yaml
+++ b/keystone/values.yaml
@@ -863,7 +863,7 @@ conf:
         - default
     logger_root:
       level: WARNING
-      handlers: null
+      handlers: 'null'
     logger_keystone:
       level: INFO
       handlers:
diff --git a/magnum/values.yaml b/magnum/values.yaml
index ac66da5555..05fee4b0bd 100644
--- a/magnum/values.yaml
+++ b/magnum/values.yaml
@@ -151,7 +151,7 @@ conf:
         - default
     logger_root:
       level: WARNING
-      handlers: null
+      handlers: 'null'
     logger_magnum:
       level: INFO
       handlers:
diff --git a/mistral/values.yaml b/mistral/values.yaml
index 3d135ba232..2eae336b83 100644
--- a/mistral/values.yaml
+++ b/mistral/values.yaml
@@ -482,7 +482,7 @@ conf:
         - default
     logger_root:
       level: WARNING
-      handlers: null
+      handlers: 'null'
     logger_mistral:
       level: INFO
       handlers:
diff --git a/neutron/values.yaml b/neutron/values.yaml
index e45226428d..24cd1448a9 100644
--- a/neutron/values.yaml
+++ b/neutron/values.yaml
@@ -1489,7 +1489,7 @@ conf:
         - default
     logger_root:
       level: WARNING
-      handlers: null
+      handlers: 'null'
     logger_neutron:
       level: INFO
       handlers:
diff --git a/nova/values.yaml b/nova/values.yaml
index efb187df8f..ecf2708775 100644
--- a/nova/values.yaml
+++ b/nova/values.yaml
@@ -1536,7 +1536,7 @@ conf:
         - default
     logger_root:
       level: WARNING
-      handlers: null
+      handlers: 'null'
     logger_nova:
       level: INFO
       handlers:
diff --git a/senlin/values.yaml b/senlin/values.yaml
index 0d0aeaa178..25f7895b26 100644
--- a/senlin/values.yaml
+++ b/senlin/values.yaml
@@ -196,7 +196,7 @@ conf:
         - default
     logger_root:
       level: WARNING
-      handlers: null
+      handlers: 'null'
     logger_senlin:
       level: INFO
       handlers: