diff --git a/pkgs/by-name/ct/ctypes_sh/package.nix b/pkgs/by-name/ct/ctypes_sh/package.nix
index 032edc5f7d22..686bca23d390 100644
--- a/pkgs/by-name/ct/ctypes_sh/package.nix
+++ b/pkgs/by-name/ct/ctypes_sh/package.nix
@@ -32,6 +32,10 @@ stdenv.mkDerivation rec {
     libdwarf
   ];
 
+  env = lib.optionalAttrs stdenv.cc.isGNU {
+    NIX_CFLAGS_COMPILE = "-Wno-error=incompatible-pointer-types";
+  };
+
   meta = with lib; {
     description = "Foreign function interface for bash";
     mainProgram = "ctypes.sh";