diff --git a/Kernel/API/POSIX/signal.h b/Kernel/API/POSIX/signal.h
index b8f3b245974..4d9d6805207 100644
--- a/Kernel/API/POSIX/signal.h
+++ b/Kernel/API/POSIX/signal.h
@@ -26,10 +26,12 @@ union sigval {
 typedef struct siginfo {
     int si_signo;
     int si_code;
+    int si_errno;
     pid_t si_pid;
     uid_t si_uid;
     void* si_addr;
     int si_status;
+    int si_band;
     union sigval si_value;
 } siginfo_t;