diff --git a/xyz/openbmc_project/Inventory/Item/Dimm.interface.yaml b/xyz/openbmc_project/Inventory/Item/Dimm.interface.yaml
index ff24340..3f628f2 100644
--- a/xyz/openbmc_project/Inventory/Item/Dimm.interface.yaml
+++ b/xyz/openbmc_project/Inventory/Item/Dimm.interface.yaml
@@ -6,7 +6,7 @@
       description: >
           Data width of Memory.
     - name: MemorySizeInKB
-      type: uint32
+      type: size
       description: >
           Memory size of DIMM in Kilobyte.
     - name: MemoryDeviceLocator
diff --git a/xyz/openbmc_project/Inventory/Manager.interface.yaml b/xyz/openbmc_project/Inventory/Manager.interface.yaml
index 90534ac..6f32fcb 100644
--- a/xyz/openbmc_project/Inventory/Manager.interface.yaml
+++ b/xyz/openbmc_project/Inventory/Manager.interface.yaml
@@ -12,6 +12,6 @@
           state managed.
       parameters:
         - name: object
-          type: dict[path,dict[string,dict[string,variant[boolean,int64,string,array[byte]]]]]
+          type: dict[path,dict[string,dict[string,variant[boolean,size,int64,string,array[byte]]]]]
           description: >
               A dictionary of fully enumerated items to be managed.