diff --git a/include/osmocom/sim/sim.h b/include/osmocom/sim/sim.h
index 680cad1..0490dcd 100644
--- a/include/osmocom/sim/sim.h
+++ b/include/osmocom/sim/sim.h
@@ -296,6 +296,7 @@
 					uint16_t sw_in);
 
 struct osim_card_hdl;
+char *osim_print_sw_buf(char *buf, size_t buf_len, const struct osim_card_hdl *ch, uint16_t sw_in);
 char *osim_print_sw(const struct osim_card_hdl *ch, uint16_t sw_in);
 
 extern const struct tlv_definition ts102221_fcp_tlv_def;