diff --git a/OvmfPkg/OvmfPkg.dec b/OvmfPkg/OvmfPkg.dec
index a42bd9daea..a316be758a 100644
--- a/OvmfPkg/OvmfPkg.dec
+++ b/OvmfPkg/OvmfPkg.dec
@@ -32,7 +32,7 @@
   gUefiOvmfPkgTokenSpaceGuid.PcdOvmfMemFvBase|0x0|UINT32|0
   gUefiOvmfPkgTokenSpaceGuid.PcdOvmfMemFvSize|0x0|UINT32|1
 
-[PcdsDynamic]
+[PcdsDynamic, PcdsDynamicEx]
   gUefiOvmfPkgTokenSpaceGuid.PcdEmuVariableEvent|0|UINT64|2
 
 [LibraryClasses]