diff --git a/pkgs/desktops/gnome-2/desktop/gtksourceview/default.nix b/pkgs/desktops/gnome-2/desktop/gtksourceview/default.nix
index 95455d76db79..30a33349e5a2 100644
--- a/pkgs/desktops/gnome-2/desktop/gtksourceview/default.nix
+++ b/pkgs/desktops/gnome-2/desktop/gtksourceview/default.nix
@@ -45,6 +45,9 @@ stdenv.mkDerivation (finalAttrs: {
     })
   ];
 
+  # Fix build with gcc 14
+  env.NIX_CFLAGS_COMPILE = "-Wno-error=incompatible-pointer-types";
+
   nativeBuildInputs = [
     pkg-config
     intltool