diff --git a/lib/delphi/src/Thrift.Utils.pas b/lib/delphi/src/Thrift.Utils.pas
index 11c4f3e..ede2656 100644
--- a/lib/delphi/src/Thrift.Utils.pas
+++ b/lib/delphi/src/Thrift.Utils.pas
@@ -93,6 +93,9 @@
   end;
 
 
+const
+  THRIFT_MIMETYPE = 'application/x-thrift';
+
 {$IFDEF Win64}
 function InterlockedExchangeAdd64( var Addend : Int64; Value : Int64) : Int64;  
 {$ENDIF}