diff --git a/src/MyFirstUDRKit.cpp b/src/MyFirstUDRKit.cpp
index faac21b..8f2dcde 100644
--- a/src/MyFirstUDRKit.cpp
+++ b/src/MyFirstUDRKit.cpp
@@ -174,7 +174,7 @@ FB_UDR_END_FUNCTION
 FB_UDR_BEGIN_FUNCTION (MFK_LoadBlobFromFile)
 //BEGIN
 FB_UDR_MESSAGE(InMessage,
-							 (FB_CHAR(8191), afilename)
+							 (FB_VARCHAR(8191), afilename)
 							 (FB_BLOB, ablob)
 );