diff --git a/BaseTools/Source/Python/Workspace/DscBuildData.py b/BaseTools/Source/Python/Workspace/DscBuildData.py
index 91b3a2737d..9c43daca5e 100644
--- a/BaseTools/Source/Python/Workspace/DscBuildData.py
+++ b/BaseTools/Source/Python/Workspace/DscBuildData.py
@@ -966,6 +966,7 @@ class DscBuildData(PlatformBuildClassObject):
                                             )
                 else:
                     if (TokenCName, TokenSpaceGuidCName) in self.DecPcds:
+                        PcdDatumType = self.DecPcds[(TokenCName, TokenSpaceGuidCName)].DatumType
                         FoundFlag = True
                 if not FoundFlag:
                     if HasTokenSpace: