diff --git a/src/unix/notbsd/android/mod.rs b/src/unix/notbsd/android/mod.rs
index 1f643815..58b758dd 100644
--- a/src/unix/notbsd/android/mod.rs
+++ b/src/unix/notbsd/android/mod.rs
@@ -1955,6 +1955,8 @@ extern {
                           f: extern fn(*mut ::c_void) -> *mut ::c_void,
                           value: *mut ::c_void) -> ::c_int;
     pub fn __errno() -> *mut ::c_int;
+    pub fn sendmmsg(sockfd: ::c_int, msgvec: *const ::mmsghdr, vlen: ::c_uint,
+                    flags: ::c_int) -> ::c_int;
 }
 
 cfg_if! {
diff --git a/src/unix/notbsd/linux/mod.rs b/src/unix/notbsd/linux/mod.rs
index 614fedd2..7da7dcf5 100644
--- a/src/unix/notbsd/linux/mod.rs
+++ b/src/unix/notbsd/linux/mod.rs
@@ -2077,6 +2077,8 @@ extern {
     pub fn getdomainname(name: *mut ::c_char, len: ::size_t) -> ::c_int;
     pub fn setdomainname(name: *const ::c_char, len: ::size_t) -> ::c_int;
     pub fn vhangup() -> ::c_int;
+    pub fn sendmmsg(sockfd: ::c_int, msgvec: *mut ::mmsghdr, vlen: ::c_uint,
+                    flags: ::c_int) -> ::c_int;
     pub fn sync();
     pub fn syscall(num: ::c_long, ...) -> ::c_long;
     pub fn sched_getaffinity(pid: ::pid_t,
diff --git a/src/unix/notbsd/mod.rs b/src/unix/notbsd/mod.rs
index d3402e90..89d055b1 100644
--- a/src/unix/notbsd/mod.rs
+++ b/src/unix/notbsd/mod.rs
@@ -1378,8 +1378,6 @@ extern {
                    flags: ::c_int) -> ::ssize_t;
     pub fn recvmsg(fd: ::c_int, msg: *mut ::msghdr, flags: ::c_int)
                    -> ::ssize_t;
-    pub fn sendmmsg(sockfd: ::c_int, msgvec: *mut ::mmsghdr, vlen: ::c_uint,
-                    flags: ::c_int) -> ::c_int;
     pub fn recvmmsg(sockfd: ::c_int, msgvec: *mut ::mmsghdr, vlen: ::c_uint,
                     flags: ::c_int, timeout: *mut ::timespec) -> ::c_int;
     pub fn uname(buf: *mut ::utsname) -> ::c_int;