diff --git a/repos/libports/lib/symbols/libc b/repos/libports/lib/symbols/libc
index 12dd502760..445452a50d 100644
--- a/repos/libports/lib/symbols/libc
+++ b/repos/libports/lib/symbols/libc
@@ -705,6 +705,7 @@ setuid W
 setusershell T
 setvbuf T
 shutdown T
+_sigaction W
 sigaction W
 sigaddset T
 sigaltstack T