diff --git a/meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-host/merge_yamls.py b/meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-host/merge_yamls.py
index 5e6c4b5..877e3eb 100755
--- a/meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-host/merge_yamls.py
+++ b/meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-host/merge_yamls.py
@@ -12,6 +12,11 @@
 import yaml
 import copy
 
+# Custom representer for None types. This is to handle empty dictionaries.
+# By default Pyyaml outputs these as "null", whereas we want an empty character.
+def represent_none(self, _):
+    return self.represent_scalar('tag:yaml.org,2002:null', '')
+
 def dict_merge(target, source):
     """Deep merge for dicts.
 
@@ -43,6 +48,8 @@
     # No overrides to handle
     sys.exit(0)
 
+yaml.add_representer(type(None), represent_none)
+
 target_filename = sys.argv[1]
 with open(target_filename) as target_file:
     data = yaml.safe_load(target_file)
diff --git a/meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-sensor-inventory-mrw-config/config.yaml b/meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-sensor-inventory-mrw-config/config.yaml
index ec82afe..8188612 100644
--- a/meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-sensor-inventory-mrw-config/config.yaml
+++ b/meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-sensor-inventory-mrw-config/config.yaml
@@ -207,6 +207,7 @@
             type: "bool"
             assert: true
             deassert: false
+    xyz.openbmc_project.Inventory.Item.Accelerator:
 # Field replaceable doesn't come as a sensor data
 # but we know that GPU is Field replaceable so setting
 # true in both cases.