diff --git a/plugins/include/core.inc b/plugins/include/core.inc
index 47f05e1c..f6a1491a 100644
--- a/plugins/include/core.inc
+++ b/plugins/include/core.inc
@@ -246,7 +246,7 @@ public void __ext_core_SetNTVOptional()
 	MarkNativeAsOptional("BfRead.ReadVecCoord");
 	MarkNativeAsOptional("BfRead.ReadVecNormal");
 	MarkNativeAsOptional("BfRead.ReadAngles");
-	MarkNativeAsOptional("BfRead.GetNumBytesLeft");
+	MarkNativeAsOptional("BfRead.BytesLeft.get");
 	
 	MarkNativeAsOptional("PbReadInt");
 	MarkNativeAsOptional("PbReadFloat");