diff --git a/pkgs/development/libraries/geis/default.nix b/pkgs/development/libraries/geis/default.nix
index 56d8cd21f84..fa3aa77cd3a 100644
--- a/pkgs/development/libraries/geis/default.nix
+++ b/pkgs/development/libraries/geis/default.nix
@@ -29,7 +29,9 @@ stdenv.mkDerivation rec {
     sha256 = "1svhbjibm448ybq6gnjjzj0ak42srhihssafj0w402aj71lgaq4a";
   };
 
-  NIX_CFLAGS_COMPILE = "-Wno-format -Wno-misleading-indentation -Wno-error";
+  NIX_CFLAGS_COMPILE = [ "-Wno-error=misleading-indentation" "-Wno-error=pointer-compare" ];
+
+  hardeningDisable = [ "format" ];
 
   pythonPath = with python3Packages;
     [ pygobject3  ];