diff --git a/pkgs/development/compilers/ghc/common-hadrian.nix b/pkgs/development/compilers/ghc/common-hadrian.nix
index 0539efbd800b..cead462b88d1 100644
--- a/pkgs/development/compilers/ghc/common-hadrian.nix
+++ b/pkgs/development/compilers/ghc/common-hadrian.nix
@@ -426,10 +426,10 @@ stdenv.mkDerivation ({
     runHook preBuild
 
     # hadrianFlagsArray is created in preConfigure
-    echo "hadrianFlags: $hadrianFlags ''${hadrianFlagsArray}"
+    echo "hadrianFlags: $hadrianFlags ''${hadrianFlagsArray[@]}"
 
     # We need to go via the bindist for installing
-    hadrian $hadrianFlags "''${hadrianFlagsArray}" binary-dist-dir
+    hadrian $hadrianFlags "''${hadrianFlagsArray[@]}" binary-dist-dir
 
     runHook postBuild
   '';