diff --git a/OvmfPkg/Library/XenHypercallLib/Aarch64/Hypercall.S b/OvmfPkg/Library/XenHypercallLib/AArch64/Hypercall.S
similarity index 100%
rename from OvmfPkg/Library/XenHypercallLib/Aarch64/Hypercall.S
rename to OvmfPkg/Library/XenHypercallLib/AArch64/Hypercall.S
diff --git a/OvmfPkg/Library/XenHypercallLib/XenHypercallLib.inf b/OvmfPkg/Library/XenHypercallLib/XenHypercallLib.inf
index 32ae73f7aa..edb7787239 100644
--- a/OvmfPkg/Library/XenHypercallLib/XenHypercallLib.inf
+++ b/OvmfPkg/Library/XenHypercallLib/XenHypercallLib.inf
@@ -42,7 +42,7 @@
   Arm/Hypercall.S
 
 [Sources.AARCH64]
-  Aarch64/Hypercall.S
+  AArch64/Hypercall.S
 
 [Sources]
   XenHypercall.c