diff --git a/src/VirtualLeafpar.tmpl b/src/VirtualLeafpar.tmpl
--- a/src/VirtualLeafpar.tmpl
+++ b/src/VirtualLeafpar.tmpl
@@ -125,4 +125,4 @@ b4 = false / bool
 dir1 = . / directory
 dir2 = . / directory
 export_interval = 0 / int
-export_fn_prefix = CellData_ / string
+export_fn_prefix = cell. / string