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