diff --git a/scripts/nix-pack-closure.in b/scripts/nix-pack-closure.in
index 8523c61dc4..ccc5f7eb88 100644
--- a/scripts/nix-pack-closure.in
+++ b/scripts/nix-pack-closure.in
@@ -32,8 +32,7 @@ while (@ARGV) {
 
     # Get the closure of this path.
     my $pid = open(READ,
-        "$binDir/nix-store --query --requisites " .
-        "--force-realise '$storePath'|") or die;
+        "$binDir/nix-store --query --requisites '$storePath'|") or die;
     
     while (<READ>) {
         chomp;