diff --git a/pkgs/build-support/cc-wrapper/default.nix b/pkgs/build-support/cc-wrapper/default.nix
index 8a9bd3ecb4d..c8e3d8b4cc8 100644
--- a/pkgs/build-support/cc-wrapper/default.nix
+++ b/pkgs/build-support/cc-wrapper/default.nix
@@ -252,10 +252,10 @@ stdenv.mkDerivation {
 
       # some linkers on some platforms don't support specific -z flags
       hardening_unsupported_flags=""
-      if [[ "$($ldPath/ld -z now 2>&1 || true)" =~ "unknown option" ]]; then
+      if [[ "$($ldPath/ld -z now 2>&1 || true)" =~ un(recognized|known)\ option ]]; then
         hardening_unsupported_flags+=" bindnow"
       fi
-      if [[ "$($ldPath/ld -z relro 2>&1 || true)" =~ "unknown option" ]]; then
+      if [[ "$($ldPath/ld -z relro 2>&1 || true)" =~ un(recognized|known)\ option ]]; then
         hardening_unsupported_flags+=" relro"
       fi