diff --git a/OvmfPkg/Library/XenIoMmioLib/XenIoMmioLib.inf b/OvmfPkg/Library/XenIoMmioLib/XenIoMmioLib.inf
index 16cc453035..d02588f281 100644
--- a/OvmfPkg/Library/XenIoMmioLib/XenIoMmioLib.inf
+++ b/OvmfPkg/Library/XenIoMmioLib/XenIoMmioLib.inf
@@ -30,6 +30,7 @@
 
 [LibraryClasses]
   BaseMemoryLib
+  MemoryAllocationLib
 
 [Guids]
   gXenBusRootDeviceGuid