diff --git a/BaseTools/Source/Python/Common/VpdInfoFile.py b/BaseTools/Source/Python/Common/VpdInfoFile.py
index 4249b9f899..1e0c3dfe76 100644
--- a/BaseTools/Source/Python/Common/VpdInfoFile.py
+++ b/BaseTools/Source/Python/Common/VpdInfoFile.py
@@ -248,8 +248,8 @@ def CallExtenalBPDGTool(ToolPath, VpdFileName):
         PopenObject.wait()
 
     if PopenObject.returncode != 0:
-        EdkLogger.debug(EdkLogger.DEBUG_1, "Fail to call BPDG tool", str(error))
+        EdkLogger.debug(EdkLogger.DEBUG_1, "Fail to call BPDG tool", str(error.decode()))
         EdkLogger.error("BPDG", BuildToolError.COMMAND_FAILURE, "Fail to execute BPDG tool with exit code: %d, the error message is: \n %s" % \
-                            (PopenObject.returncode, str(error)))
+                            (PopenObject.returncode, str(error.decode())))
 
     return PopenObject.returncode