diff --git a/pkgs/tools/networking/socat/default.nix b/pkgs/tools/networking/socat/default.nix
index 500d33827b3..ba7aaee63ab 100644
--- a/pkgs/tools/networking/socat/default.nix
+++ b/pkgs/tools/networking/socat/default.nix
@@ -8,8 +8,6 @@ stdenv.mkDerivation rec {
     sha256 = "1z7xgnwiqpcv1j6aghhj9nqbx7cg3gpc4n9j7vi9hm7nhv5788wp";
   };
 
-  patches = stdenv.lib.optional stdenv.isDarwin ./speed-type-fix.patch;
-
   postPatch = ''
     patchShebangs test.sh
     substituteInPlace test.sh \
diff --git a/pkgs/tools/networking/socat/speed-type-fix.patch b/pkgs/tools/networking/socat/speed-type-fix.patch
deleted file mode 100644
index 58e4c716bba..00000000000
--- a/pkgs/tools/networking/socat/speed-type-fix.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-diff --git a/xio-termios.h b/xio-termios.h
-index a288a2f..9858aab 100644
---- a/xio-termios.h
-+++ b/xio-termios.h
-@@ -148,7 +148,7 @@ extern int xiotermiosflag_applyopt(int fd, struct opt *opt);
- extern int xiotermios_value(int fd, int word, tcflag_t mask, tcflag_t value);
- extern int xiotermios_char(int fd, int n, unsigned char c);
- #ifdef HAVE_TERMIOS_ISPEED
--extern int xiotermios_speed(int fd, int n, unsigned int speed);
-+extern int xiotermios_speed(int fd, int n, speed_t speed);
- #endif
- extern int xiotermios_spec(int fd, int optcode);
- extern int xiotermios_flush(int fd);