diff --git a/lib/std/os.zig b/lib/std/os.zig
index 123dfc9747..082a09b247 100644
--- a/lib/std/os.zig
+++ b/lib/std/os.zig
@@ -5309,7 +5309,7 @@ pub fn ioctl_SIOCGIFINDEX(fd: fd_t, ifr: *ifreq) IoCtl_SIOCGIFINDEX_Error!void {
 }
 
 pub fn signalfd(fd: fd_t, mask: *const sigset_t, flags: i32) !fd_t {
-    const rc = system.signalfd4(fd, mask, flags);
+    const rc = system.signalfd(fd, mask, flags);
     switch (errno(rc)) {
         0 => return @intCast(fd_t, rc),
         EBADF, EINVAL => unreachable,
diff --git a/lib/std/os/linux.zig b/lib/std/os/linux.zig
index d9f7dda03e..4bb1da9587 100644
--- a/lib/std/os/linux.zig
+++ b/lib/std/os/linux.zig
@@ -1200,7 +1200,7 @@ pub fn ioctl(fd: fd_t, request: u32, arg: usize) usize {
     return syscall3(.ioctl, @bitCast(usize, @as(isize, fd)), request, arg);
 }
 
-pub fn signalfd4(fd: fd_t, mask: *const sigset_t, flags: i32) usize {
+pub fn signalfd(fd: fd_t, mask: *const sigset_t, flags: i32) usize {
     return syscall4(
         .signalfd4,
         @bitCast(usize, @as(isize, fd)),