diff --git a/src/VecSim/algorithms/brute_force/brute_force.h b/src/VecSim/algorithms/brute_force/brute_force.h
index e70edb88c..25f51df93 100644
--- a/src/VecSim/algorithms/brute_force/brute_force.h
+++ b/src/VecSim/algorithms/brute_force/brute_force.h
@@ -225,7 +225,7 @@ size_t BruteForceIndex<DataType, DistType>::indexSize() const {
 
 template <typename DataType, typename DistType>
 size_t BruteForceIndex<DataType, DistType>::indexCapacity() const {
-    return this->idToLabelMapping.capacity();
+    return this->idToLabelMapping.size();
 }
 
 template <typename DataType, typename DistType>