diff --git a/utilities/spatialdb/spatial_db.cc b/utilities/spatialdb/spatial_db.cc
index 21a111d3e..f0aed8faa 100644
--- a/utilities/spatialdb/spatial_db.cc
+++ b/utilities/spatialdb/spatial_db.cc
@@ -221,6 +221,7 @@ std::string FeatureSet::DebugString() const {
     switch (iter.second.type()) {
       case Variant::kNull:
         out.append("null");
+        break;
       case Variant::kBool:
         if (iter.second.get_bool()) {
           out.append("true");