diff --git a/include/core_api_utils.h b/include/core_api_utils.h
index ecbeee1a..b61142bc 100644
--- a/include/core_api_utils.h
+++ b/include/core_api_utils.h
@@ -9,6 +9,12 @@ struct deletion_state_t {
     std::vector<std::pair<size_t, uint32_t*>> index_ids;
     std::vector<size_t> offsets;
     size_t num_removed;
+
+    ~deletion_state_t() {
+        for(auto& kv: index_ids) {
+            delete [] kv.second;
+        }
+    }
 };
 
 Option<bool> stateful_remove_docs(deletion_state_t* deletion_state, size_t batch_size, bool& done);
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