diff --git a/OvmfPkg/QemuVideoDxe/QemuVideoDxe.inf b/OvmfPkg/QemuVideoDxe/QemuVideoDxe.inf
index 895e6b8dbd..a04ed537dd 100644
--- a/OvmfPkg/QemuVideoDxe/QemuVideoDxe.inf
+++ b/OvmfPkg/QemuVideoDxe/QemuVideoDxe.inf
@@ -39,6 +39,7 @@
   Gop.c
   Initialize.c
   Qemu.h
+  UnalignedIoInternal.h
 
 [Sources.Ia32, Sources.X64]
   UnalignedIoGcc.c    | GCC