diff --git a/src/script/hydra-update-gc-roots b/src/script/hydra-update-gc-roots
index d0341897..16aefb8c 100755
--- a/src/script/hydra-update-gc-roots
+++ b/src/script/hydra-update-gc-roots
@@ -136,7 +136,7 @@ foreach my $link (@roots) {
     if (!defined $roots{$path}) {
         print STDERR "removing root $path\n";
 	$rootsDeleted++;
-        #unlink "$gcRootsDir/$link" or warn "cannot remove $gcRootsDir/$link";
+        unlink "$gcRootsDir/$link" or warn "cannot remove $gcRootsDir/$link";
     } else {
 	$rootsKept++;
     }