diff --git a/benchmarks/tpcc.h b/benchmarks/tpcc.h
index a0a0b18e..b6e0dd49 100644
--- a/benchmarks/tpcc.h
+++ b/benchmarks/tpcc.h
@@ -35,7 +35,7 @@ class tpcc_wl : public workload {
 	INDEX * 	i_orderline_wd; // key = (w_id, d_id). 
 	
 	bool ** delivering;
-	uint32_t next_tid;
+	uint32_t next_tid {0};
 private:
 	uint64_t num_wh;
 	void init_tab_item();