diff --git a/resources/sql/patches/069.heraldxscript.sql b/resources/sql/patches/069.heraldxscript.sql
new file mode 100644
index 0000000000..753aa44bd1
--- /dev/null
+++ b/resources/sql/patches/069.heraldxscript.sql
@@ -0,0 +1,9 @@
+ALTER TABLE phabricator_herald.herald_transcript
+  ADD garbageCollected BOOL NOT NULL DEFAULT 0;
+
+UPDATE phabricator_herald.herald_transcript
+  SET garbageCollected = 1
+  WHERE objectTranscript = "";
+
+ALTER TABLE phabricator_herald.herald_transcript
+  ADD KEY (garbageCollected, time);
diff --git a/src/infrastructure/daemon/garbagecollector/PhabricatorGarbageCollectorDaemon.php b/src/infrastructure/daemon/garbagecollector/PhabricatorGarbageCollectorDaemon.php
index 4375c08034..4faad2c859 100644
--- a/src/infrastructure/daemon/garbagecollector/PhabricatorGarbageCollectorDaemon.php
+++ b/src/infrastructure/daemon/garbagecollector/PhabricatorGarbageCollectorDaemon.php
@@ -104,8 +104,9 @@ class PhabricatorGarbageCollectorDaemon extends PhabricatorDaemon {
           objectTranscript     = "",
           ruleTranscripts      = "",
           conditionTranscripts = "",
-          applyTranscripts     = ""
-        WHERE `time` < %d AND objectTranscript != ""
+          applyTranscripts     = "",
+          garbageCollected     = 1
+        WHERE garbageCollected = 0 AND `time` < %d
         LIMIT 100',
       $table->getTableName(),
       time() - $ttl);