diff --git a/src/script/hydra_build.pl b/src/script/hydra_build.pl
index 328acad1..90041c0b 100755
--- a/src/script/hydra_build.pl
+++ b/src/script/hydra_build.pl
@@ -55,7 +55,7 @@ sub doBuild {
             # !!! should disregard fixed-output derivations (?)
             if (!isValidPath($dep)) {
                 my ($step) = $db->resultset('BuildSteps')->search(
-                    {outPath => $dep}, {rows => 1, order_by => "stopTime DESC", busy => 0});
+                    {outPath => $dep}, {rows => 1, order_by => "stopTime DESC", type => 0, busy => 0});
                 if ($step && $step->status != 0) {
                     $buildStatus = 5;
                     $failedDepBuild = $step->id->id;