diff --git a/FatPkg/FatPkg.dsc b/FatPkg/FatPkg.dsc
index 49b42213aa..6b5ba8404b 100644
--- a/FatPkg/FatPkg.dsc
+++ b/FatPkg/FatPkg.dsc
@@ -16,7 +16,7 @@
   PLATFORM_GUID                  = 25b55dbc-9d0b-4a32-80da-46e1273d622c
   PLATFORM_VERSION               = 0.3
   DSC_SPECIFICATION              = 0x00010005
-  SUPPORTED_ARCHITECTURES        = IA32|X64|EBC|ARM|AARCH64|RISCV64|LOONGARCH64
+  SUPPORTED_ARCHITECTURES        = IA32|X64|EBC|AARCH64|RISCV64|LOONGARCH64
   OUTPUT_DIRECTORY               = Build/Fat
   BUILD_TARGETS                  = DEBUG|RELEASE|NOOPT
   SKUID_IDENTIFIER               = DEFAULT