diff --git a/pkgs/development/compilers/flutter/engine/package.nix b/pkgs/development/compilers/flutter/engine/package.nix
index 5c0e732f524f..fa11bfe01341 100644
--- a/pkgs/development/compilers/flutter/engine/package.nix
+++ b/pkgs/development/compilers/flutter/engine/package.nix
@@ -312,7 +312,7 @@ stdenv.mkDerivation (finalAttrs: {
   installPhase = ''
     runHook preInstall
 
-    rm -rf $out/out/$outName/{obj,gen,exe.unstripped,lib.unstripped,zip_archives}
+    rm -rf $out/out/$outName/{obj,exe.unstripped,lib.unstripped,zip_archives}
     rm $out/out/$outName/{args.gn,build.ninja,build.ninja.d,compile_commands.json,toolchain.ninja}
     find $out/out/$outName -name '*_unittests' -delete
     find $out/out/$outName -name '*_benchmarks' -delete