diff --git a/pkgs/desktops/enlightenment/efl/default.nix b/pkgs/desktops/enlightenment/efl/default.nix
index 881a374ff21a..aa5c08282527 100644
--- a/pkgs/desktops/enlightenment/efl/default.nix
+++ b/pkgs/desktops/enlightenment/efl/default.nix
@@ -161,6 +161,9 @@ stdenv.mkDerivation rec {
 
   dontDropIconThemeCache = true;
 
+  # Fix build with gcc15 (-std=gnu23)
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isGNU "-std=gnu17";
+
   mesonFlags = [
     "--buildtype=release"
     "-D build-tests=false" # disable build tests, which are not working