diff --git a/SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/X64/AsmFuncs.S b/SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/X64/AsmFuncs.S
index b742b67dba..365bc940fe 100644
--- a/SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/X64/AsmFuncs.S
+++ b/SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/X64/AsmFuncs.S
@@ -32,9 +32,9 @@ ASM_GLOBAL ASM_PFX(CommonEntry)
   .byte 0x41, 0x47, 0x54, 0x48   # AGENT_HANDLER_SIGNATURE     SIGNATURE_32('A','G','T','H')
 .endm
 
-.data
+.data
 
-ASM_PFX(ExceptionStubHeaderSize):  .word     ASM_PFX(Exception1Handle) - ASM_PFX(Exception0Handle)
+ASM_PFX(ExceptionStubHeaderSize):  .word     ASM_PFX(Exception1Handle) - ASM_PFX(Exception0Handle)
 
 
 .text