diff --git a/pkgs/by-name/od/odyssey/fix-missing-c-header.patch b/pkgs/by-name/od/odyssey/fix-missing-c-header.patch
new file mode 100644
index 000000000000..f3312e5e2495
--- /dev/null
+++ b/pkgs/by-name/od/odyssey/fix-missing-c-header.patch
@@ -0,0 +1,12 @@
+diff --git a/third_party/kiwi/kiwi.h b/third_party/kiwi/kiwi.h
+index d3bf4113..a8a2ad6e 100644
+--- a/third_party/kiwi/kiwi.h
++++ b/third_party/kiwi/kiwi.h
+@@ -15,6 +15,7 @@
+ #include <string.h>
+ #include <pthread.h>
+ #include <assert.h>
++#include <ctype.h>
+ #include <machinarium.h>
+ 
+ #include "kiwi/macro.h"
diff --git a/pkgs/by-name/od/odyssey/package.nix b/pkgs/by-name/od/odyssey/package.nix
index 39766cf81224..b6d4217b450a 100644
--- a/pkgs/by-name/od/odyssey/package.nix
+++ b/pkgs/by-name/od/odyssey/package.nix
@@ -26,6 +26,8 @@ stdenv.mkDerivation rec {
       url = "https://github.com/yandex/odyssey/commit/01ca5b345c4483add7425785c9c33dfa2c135d63.patch";
       sha256 = "sha256-8UPkZkiI08ZZL6GShhug/5/kOVrmdqYlsD1bcqfxg/w=";
     })
+    # Fixes kiwi build.
+    ./fix-missing-c-header.patch
   ];
 
   nativeBuildInputs = [ cmake ];
@@ -34,6 +36,9 @@ stdenv.mkDerivation rec {
     libpq
     zstd
   ];
+
+  env.NIX_CFLAGS_COMPILE = "-Wno-error=implicit-int -Wno-error=incompatible-pointer-types";
+
   cmakeFlags = [
     "-DBUILD_COMPRESSION=ON"
     "-DPOSTGRESQL_INCLUDE_DIR=${lib.getDev libpq}/include/postgresql/server"