diff --git a/SourceLevelDebugPkg/SourceLevelDebugPkg.dsc b/SourceLevelDebugPkg/SourceLevelDebugPkg.dsc
index bf14ec452e..d9b1b84b15 100644
--- a/SourceLevelDebugPkg/SourceLevelDebugPkg.dsc
+++ b/SourceLevelDebugPkg/SourceLevelDebugPkg.dsc
@@ -107,3 +107,6 @@
   SourceLevelDebugPkg/Library/DebugAgent/SmmDebugAgentLib.inf
   SourceLevelDebugPkg/DebugAgentPei/DebugAgentPei.inf
   SourceLevelDebugPkg/DebugAgentDxe/DebugAgentDxe.inf
+
+[BuildOptions]
+  *_*_*_CC_FLAGS = -D DISABLE_NEW_DEPRECATED_INTERFACES