diff --git a/pkgs/shells/tcsh/default.nix b/pkgs/shells/tcsh/default.nix
index da76e2c3027..1dc96655956 100644
--- a/pkgs/shells/tcsh/default.nix
+++ b/pkgs/shells/tcsh/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl
+{ stdenv, fetchurl, fetchpatch
 , ncurses }:
 
 stdenv.mkDerivation rec {
@@ -16,6 +16,13 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ ncurses ];
 
+  patches = stdenv.lib.optional stdenv.hostPlatform.isMusl
+    (fetchpatch {
+      name = "sysmalloc.patch";
+      url = "https://git.alpinelinux.org/cgit/aports/plain/community/tcsh/001-sysmalloc.patch?id=184585c046cdd56512f1a76e426dd799b368f8cf";
+      sha256 = "1qc6ydxhdfizsbkaxhpn3wib8sfphrw10xnnsxx2prvzg9g2zp67";
+    });
+
   meta = with stdenv.lib;{
     description = "An enhanced version of the Berkeley UNIX C shell (csh)";
     longDescription = ''