diff --git a/pkgs/development/libraries/science/math/atlas/default.nix b/pkgs/development/libraries/science/math/atlas/default.nix
index db8aff49c002..6ff7e387ec1f 100644
--- a/pkgs/development/libraries/science/math/atlas/default.nix
+++ b/pkgs/development/libraries/science/math/atlas/default.nix
@@ -66,6 +66,8 @@ stdenv.mkDerivation {
   patches = optional tolerateCpuTimingInaccuracy ./disable-timing-accuracy-check.patch
     ++ optional stdenv.isDarwin ./tmpdir.patch;
 
+  hardeningDisable = [ "format" ];
+
   # Configure outside of the source directory.
   preConfigure = ''
     mkdir build
@@ -76,7 +78,6 @@ stdenv.mkDerivation {
   # * -t 0 disables use of multi-threading. It's not quite clear what the
   #   consequences of that setting are and whether it's necessary or not.
   configureFlags = [
-    "-Fa alg"
     "-t ${threads}"
     cpuConfig
   ] ++ optional shared "--shared"