diff --git a/lib/std/libc/libc.c3 b/lib/std/libc/libc.c3
index 799fc7b9b..8c547f4ab 100644
--- a/lib/std/libc/libc.c3
+++ b/lib/std/libc/libc.c3
@@ -43,7 +43,8 @@ const CInt SIGINT = 2;
 const CInt SIGQUIT = 3;
 const CInt SIGILL = 4;
 const CInt SIGTRAP = 5;
-const CInt SIGABTR = 6;
+const CInt SIGABRT = 6;
+const CInt SIGABTR @deprecated("use SIGABRT") = SIGABRT;
 const CInt SIGBUS = BSD_FLAVOR_SIG ? 10 : 7; // Or Mips
 const CInt SIGFPE = 8;
 const CInt SIGKILL = 9;