diff --git a/db/db_test.cc b/db/db_test.cc
index 0892969d8..6bc272744 100644
--- a/db/db_test.cc
+++ b/db/db_test.cc
@@ -467,7 +467,7 @@ class DBTest {
         options.db_log_dir = test::TmpDir();
         break;
       case kWalDir:
-        options.wal_dir = "/tmp/wal";
+        options.wal_dir = test::TmpDir() + "/wal";
         break;
       case kManifestFileSize:
         options.max_manifest_file_size = 50; // 50 bytes