diff --git a/pkgs/applications/misc/getxbook/default.nix b/pkgs/applications/misc/getxbook/default.nix
index a77f87f6f1f..95449088a48 100644
--- a/pkgs/applications/misc/getxbook/default.nix
+++ b/pkgs/applications/misc/getxbook/default.nix
@@ -9,6 +9,8 @@ stdenv.mkDerivation rec {
     sha256 = "0ihwrx4gspj8l7fc8vxch6dpjrw1lvv9z3c19f0wxnmnxhv1cjvs";
   };
 
+  NIX_CFLAGS_COMPILE = [ "-Wno-error=format-truncation" ];
+
   buildInputs = [ openssl ];
 
   makeFlags = [ "PREFIX=$(out)" ];