diff --git a/OvmfPkg/Library/QemuBootOrderLib/QemuBootOrderLib.inf b/OvmfPkg/Library/QemuBootOrderLib/QemuBootOrderLib.inf
index deb123a601..8fffee932a 100644
--- a/OvmfPkg/Library/QemuBootOrderLib/QemuBootOrderLib.inf
+++ b/OvmfPkg/Library/QemuBootOrderLib/QemuBootOrderLib.inf
@@ -32,6 +32,7 @@
 
 [Sources]
   ExtraRootBusMap.c
+  ExtraRootBusMap.h
   QemuBootOrderLib.c
 
 [Packages]