diff --git a/src/script/hydra-queue-runner b/src/script/hydra-queue-runner
index 370ea7e2..6162c9bc 100755
--- a/src/script/hydra-queue-runner
+++ b/src/script/hydra-queue-runner
@@ -19,6 +19,7 @@ my $lastTime;
 
 #$SIG{CHLD} = 'IGNORE';
 
+my $config = getHydraConfig();
 
 sub unlockDeadBuilds {
     # Unlock builds whose building process has died.
@@ -48,7 +49,7 @@ sub unlockDeadBuilds {
 # depends; or undef if no such build exists.
 sub findBuildDependencyInQueue {
     my ($buildsByDrv, $build) = @_;
-    return undef; # FIXME
+    return undef if !($config->{dependency_lookup} // 0); # FIXME
     return undef unless isValidPath($build->drvpath);
     my @deps = grep { /\.drv$/ && $_ ne $build->drvpath } computeFSClosure(0, 0, $build->drvpath);
     return unless scalar @deps > 0;