diff --git a/src/unix/linux_like/linux/gnu/mod.rs b/src/unix/linux_like/linux/gnu/mod.rs
index 4d235ba0ad951..d23b5eb7147ff 100644
--- a/src/unix/linux_like/linux/gnu/mod.rs
+++ b/src/unix/linux_like/linux/gnu/mod.rs
@@ -1393,7 +1393,6 @@ extern "C" {
     pub fn reallocarray(ptr: *mut ::c_void, nmemb: ::size_t, size: ::size_t) -> *mut ::c_void;
 
     pub fn ctermid(s: *mut ::c_char) -> *mut ::c_char;
-    pub fn ioctl(fd: ::c_int, request: ::c_ulong, ...) -> ::c_int;
     pub fn backtrace(buf: *mut *mut ::c_void, sz: ::c_int) -> ::c_int;
     pub fn glob64(
         pattern: *const ::c_char,
diff --git a/src/unix/linux_like/linux/mod.rs b/src/unix/linux_like/linux/mod.rs
index ac0bb87b2ced4..1befab6304e8d 100644
--- a/src/unix/linux_like/linux/mod.rs
+++ b/src/unix/linux_like/linux/mod.rs
@@ -6087,6 +6087,8 @@ extern "C" {
         len: ::size_t,
         flags: ::c_uint,
     ) -> ::ssize_t;
+
+    pub fn ioctl(fd: ::c_int, request: ::Ioctl, ...) -> ::c_int;
 }
 
 // LFS64 extensions
diff --git a/src/unix/linux_like/linux/musl/mod.rs b/src/unix/linux_like/linux/musl/mod.rs
index f8a7a62b17d79..1a93c39fd3a0a 100644
--- a/src/unix/linux_like/linux/musl/mod.rs
+++ b/src/unix/linux_like/linux/musl/mod.rs
@@ -843,7 +843,6 @@ extern "C" {
         new_limit: *const ::rlimit,
         old_limit: *mut ::rlimit,
     ) -> ::c_int;
-    pub fn ioctl(fd: ::c_int, request: ::c_int, ...) -> ::c_int;
     pub fn gettimeofday(tp: *mut ::timeval, tz: *mut ::c_void) -> ::c_int;
     pub fn ptrace(request: ::c_int, ...) -> ::c_long;
     pub fn getpriority(which: ::c_int, who: ::id_t) -> ::c_int;
diff --git a/src/unix/linux_like/linux/uclibc/mod.rs b/src/unix/linux_like/linux/uclibc/mod.rs
index b3c126963e090..a8b6c6e763c18 100644
--- a/src/unix/linux_like/linux/uclibc/mod.rs
+++ b/src/unix/linux_like/linux/uclibc/mod.rs
@@ -353,7 +353,6 @@ pub const UDP_SEGMENT: ::c_int = 103;
 pub const YESEXPR: ::c_int = ((5) << 8) | (0);
 
 extern "C" {
-    pub fn ioctl(fd: ::c_int, request: ::c_ulong, ...) -> ::c_int;
     pub fn gettimeofday(tp: *mut ::timeval, tz: *mut ::timezone) -> ::c_int;
 
     pub fn pthread_rwlockattr_getkind_np(