diff --git a/src/commands/signtx/stx_ui.c b/src/commands/signtx/stx_ui.c
index 2ca506d0..863bbc1f 100644
--- a/src/commands/signtx/stx_ui.c
+++ b/src/commands/signtx/stx_ui.c
@@ -42,7 +42,7 @@ static inline void id_string_remove_middle(char* str, size_t len) {
 static inline bool format_hex_id(const uint8_t* id, size_t id_len, char* out, size_t out_len) {
     int len = format_hex(id, id_len, out, out_len);
     if (len <= 0) return false;
-    id_string_remove_middle(out, len-1);
+    id_string_remove_middle(out, len - 1);
     return true;
 }