diff --git a/t/helper/test-prio-queue.c b/t/helper/test-prio-queue.c
index f4028442e3..133b5e6f4a 100644
--- a/t/helper/test-prio-queue.c
+++ b/t/helper/test-prio-queue.c
@@ -46,5 +46,7 @@ int cmd__prio_queue(int argc, const char **argv)
 		}
 	}
 
+	clear_prio_queue(&pq);
+
 	return 0;
 }
diff --git a/t/t0009-prio-queue.sh b/t/t0009-prio-queue.sh
index 3941ad2528..eea99107a4 100755
--- a/t/t0009-prio-queue.sh
+++ b/t/t0009-prio-queue.sh
@@ -1,6 +1,8 @@
 #!/bin/sh
 
 test_description='basic tests for priority queue implementation'
+
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 cat >expect <<'EOF'