marei fix expansion to test if \lxcurrecncy is empty

diff --git a/templates/print/marei/kiviletter.sty b/templates/print/marei/kiviletter.sty
index 983ffa2cb62384291ae571463f74d3450577103d..79b33a81880c80c5fba60bdaccbada3251b28380 100644 (file)
--- a/templates/print/marei/kiviletter.sty
+++ b/templates/print/marei/kiviletter.sty
@@ -648,7 +648,7 @@
   \exp_args:Nf \str_if_in:nnT {#3} {CHF} {\tl_gset:Nn \g_kivi_currency_tl {chf}}
   \exp_args:Nf \str_if_in:nnT {#3} {EUR} {\tl_gset:Nn \g_kivi_currency_tl {euro}}
   \tl_if_empty:NT  \g_kivi_currency_tl {
-    \tl_if_empty:nTF {#3} {
+    \tl_if_empty:oTF {#3} {
       \tl_gset:Nn \g_kivi_currency_tl {#1}
     } {
       \tl_gset:Nn \g_kivi_currency_tl {#3}