diff --git a/c_gen/templates/loci_show.h b/c_gen/templates/loci_show.h
index 36a067b..e125c6f 100644
--- a/c_gen/templates/loci_show.h
+++ b/c_gen/templates/loci_show.h
@@ -339,5 +339,6 @@
 #define LOCI_SHOW_u16_hybrid_version(writer, cookie, val) LOCI_SHOW_u16(writer, cookie, val)
 #define LOCI_SHOW_u32_timeout_ms(writer, cookie, val) LOCI_SHOW_u32(writer, cookie, val)
 #define LOCI_SHOW_u32_tx_interval_ms(writer, cookie, val) LOCI_SHOW_u32(writer, cookie, val)
+#define LOCI_SHOW_u8_slot_num(writer, cookie, val) LOCI_SHOW_u8(writer, cookie, val)
 
 #endif /* _LOCI_SHOW_H_ */