diff --git a/src/nebula/Nebula.cc b/src/nebula/Nebula.cc
index ac51bb2200..e5fd6bc7e3 100644
--- a/src/nebula/Nebula.cc
+++ b/src/nebula/Nebula.cc
@@ -641,7 +641,7 @@ void Nebula::bootstrap()
 
     oss.str("");
     oss << "INSERT INTO db_versioning (oid, version, timestamp, comment) "
-        << "VALUES (0, " << db_version() << ", " << time(0)
+        << "VALUES (0, '" << db_version() << "', " << time(0)
         << ", '" << version() << " daemon bootstrap')";
 
     db->exec(oss);