diff --git a/pkgs/development/libraries/glibc/default.nix b/pkgs/development/libraries/glibc/default.nix
index 9327e0d936c..150681ebda1 100644
--- a/pkgs/development/libraries/glibc/default.nix
+++ b/pkgs/development/libraries/glibc/default.nix
@@ -54,9 +54,10 @@ callPackage ./common.nix { inherit stdenv; } {
         # Fix -Werror build failure when building glibc with musl with GCC >= 8, see:
         # https://github.com/NixOS/nixpkgs/pull/68244#issuecomment-544307798
         (stdenv.lib.optional stdenv.hostPlatform.isMusl "-Wno-error=attribute-alias")
-        (stdenv.lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
+        (stdenv.lib.optionals ((stdenv.hostPlatform != stdenv.buildPlatform) || stdenv.hostPlatform.isMusl) [
           # Ignore "error: '__EI___errno_location' specifies less restrictive attributes than its target '__errno_location'"
           # New warning as of GCC 9
+          # Same for musl: https://github.com/NixOS/nixpkgs/issues/78805
           "-Wno-error=missing-attributes"
         ])
       ]);