diff --git a/pkgs/tools/networking/altermime/default.nix b/pkgs/tools/networking/altermime/default.nix
index f05669a4e502..f1e85487d8fc 100644
--- a/pkgs/tools/networking/altermime/default.nix
+++ b/pkgs/tools/networking/altermime/default.nix
@@ -10,7 +10,11 @@ stdenv.mkDerivation rec {
     sha256 = "15zxg6spcmd35r6xbidq2fgcg2nzyv1sbbqds08lzll70mqx4pj7";
   };
 
-  NIX_CFLAGS_COMPILE = "-Wno-error=format";
+  NIX_CFLAGS_COMPILE = [ "-Wno-error=format"
+    "-Wno-error=format-truncation"
+    "-Wno-error=pointer-compare"
+    "-Wno-error=memset-elt-size"
+  ];
 
   postPatch = ''
     sed -i Makefile -e "s@/usr/local@$out@"