diff --git a/BaseTools/Source/Python/Workspace/DscBuildData.py b/BaseTools/Source/Python/Workspace/DscBuildData.py
index 7854e71db6..e481ea4f64 100644
--- a/BaseTools/Source/Python/Workspace/DscBuildData.py
+++ b/BaseTools/Source/Python/Workspace/DscBuildData.py
@@ -2946,4 +2946,5 @@ class DscBuildData(PlatformBuildClassObject):
                 ModuleData = self._Bdb[ModuleFile, self._Arch, self._Target, self._Toolchain]
                 PkgSet.update(ModuleData.Packages)
             self._DecPcds, self._GuidDict = GetDeclaredPcd(self, self._Bdb, self._Arch, self._Target, self._Toolchain, PkgSet)
+            self._GuidDict.update(GlobalData.gPlatformPcds)
         return self._DecPcds