@@ -65,9 +65,9 @@
 			LexPosition pos = extractPos(t);
 
 			StrValue typ = cast(StrValue) t.access!StrValue(ValueLayer, "is");
 			if( typ is null )
-				throw genex!RuntimeException(text(`Invalid AST (no "is" field): `, _v));
+				throw genex!RuntimeException(callpos, text(`Invalid AST (no "is" field): `, _v));
 
 			foreach(AT; ListOfASTTypes)
 				if(typ.data == typeid(AT).name.split(".")[$-1].tolower())
 				{