diff --git a/yaml/xyz/openbmc_project/State/Boot/PostCode.interface.yaml b/yaml/xyz/openbmc_project/State/Boot/PostCode.interface.yaml
index 61ee2ac..0253b98 100644
--- a/yaml/xyz/openbmc_project/State/Boot/PostCode.interface.yaml
+++ b/yaml/xyz/openbmc_project/State/Boot/PostCode.interface.yaml
@@ -28,7 +28,7 @@
                 the oldest boot cycle.
       returns:
           - name: Codes
-            type: dict[uint64, struct[uint64,array[byte]]]
+            type: dict[uint64, struct[array[byte],array[byte]]]
             description: >
                 An array of post codes and timestamp in microseconds since epoch
     - name: GetPostCodes
@@ -43,7 +43,7 @@
                 the oldest boot cycle.
       returns:
           - name: Codes
-            type: array[struct[uint64,array[byte]]]
+            type: array[struct[array[byte],array[byte]]]
             description: >
                 An array of post codes of one boot cycle.
 
diff --git a/yaml/xyz/openbmc_project/State/Boot/Raw.interface.yaml b/yaml/xyz/openbmc_project/State/Boot/Raw.interface.yaml
index b288cb0..5446dfc 100644
--- a/yaml/xyz/openbmc_project/State/Boot/Raw.interface.yaml
+++ b/yaml/xyz/openbmc_project/State/Boot/Raw.interface.yaml
@@ -3,6 +3,6 @@
 
 properties:
     - name: Value
-      type: struct[uint64,array[byte]]
+      type: struct[array[byte],array[byte]]
       description: >
           The POST code value.