diff --git a/lib/src/sparql/eval.rs b/lib/src/sparql/eval.rs
index ec27237b..139bef72 100644
--- a/lib/src/sparql/eval.rs
+++ b/lib/src/sparql/eval.rs
@@ -2682,7 +2682,7 @@ fn get_triple_template_value<I: StrId>(
         TripleTemplateValue::Variable(v) => tuple.get(*v),
         TripleTemplateValue::BlankNode(id) => {
             if *id >= bnodes.len() {
-                bnodes.resize_with(*id, new_bnode)
+                bnodes.resize_with(*id + 1, new_bnode)
             }
             Some(bnodes[*id])
         }