diff --git a/MdeModulePkg/Universal/EbcDxe/EbcDxe.inf b/MdeModulePkg/Universal/EbcDxe/EbcDxe.inf
index c1a02a10f0..d912a2c93c 100644
--- a/MdeModulePkg/Universal/EbcDxe/EbcDxe.inf
+++ b/MdeModulePkg/Universal/EbcDxe/EbcDxe.inf
@@ -45,9 +45,9 @@
   Ia32/EbcLowLevel.asm
 
 [Sources.X64]
-  x64/EbcSupport.c
-  x64/EbcLowLevel.S
-  x64/EbcLowLevel.asm
+  X64/EbcSupport.c
+  X64/EbcLowLevel.S
+  X64/EbcLowLevel.asm
 
 [Sources.IPF]
   Ipf/EbcSupport.h