diff --git a/OvmfPkg/Library/AcpiTimerLib/BaseAcpiTimerLib.inf b/OvmfPkg/Library/AcpiTimerLib/BaseAcpiTimerLib.inf
index 04df609220..764edcfabe 100644
--- a/OvmfPkg/Library/AcpiTimerLib/BaseAcpiTimerLib.inf
+++ b/OvmfPkg/Library/AcpiTimerLib/BaseAcpiTimerLib.inf
@@ -25,6 +25,7 @@
 
 [Sources]
   AcpiTimerLib.c
+  AcpiTimerLib.h
   BaseAcpiTimerLib.c
 
 [Packages]
diff --git a/OvmfPkg/Library/AcpiTimerLib/BaseRomAcpiTimerLib.inf b/OvmfPkg/Library/AcpiTimerLib/BaseRomAcpiTimerLib.inf
index 946292c181..113d180162 100644
--- a/OvmfPkg/Library/AcpiTimerLib/BaseRomAcpiTimerLib.inf
+++ b/OvmfPkg/Library/AcpiTimerLib/BaseRomAcpiTimerLib.inf
@@ -24,6 +24,7 @@
 
 [Sources]
   AcpiTimerLib.c
+  AcpiTimerLib.h
   BaseRomAcpiTimerLib.c
 
 [Packages]
diff --git a/OvmfPkg/Library/AcpiTimerLib/DxeAcpiTimerLib.inf b/OvmfPkg/Library/AcpiTimerLib/DxeAcpiTimerLib.inf
index 25a9823d25..4116d5ef99 100644
--- a/OvmfPkg/Library/AcpiTimerLib/DxeAcpiTimerLib.inf
+++ b/OvmfPkg/Library/AcpiTimerLib/DxeAcpiTimerLib.inf
@@ -25,6 +25,7 @@
 
 [Sources]
   AcpiTimerLib.c
+  AcpiTimerLib.h
   DxeAcpiTimerLib.c
 
 [Packages]