diff --git a/sims/vcs/Makefile b/sims/vcs/Makefile
index 2c44ae6e..405cda54 100644
--- a/sims/vcs/Makefile
+++ b/sims/vcs/Makefile
@@ -66,7 +66,7 @@ $(sim_debug): $(sim_vsrcs) $(sim_common_files) $(dramsim_lib) $(EXTRA_SIM_REQS)
 #########################################################################################
 .PRECIOUS: $(output_dir)/%.vpd %.vpd
 $(output_dir)/%.vpd: $(output_dir)/% $(sim_debug)
-	(set -o pipefail && $(sim_debug) $(PERMISSIVE_ON) $(SIM_FLAGS) $(EXTRA_SIM_FLAGS) $(VERBOSE_FLAGS) +vcdplusfile=$@ $(PERMISSIVE_OFF) $< </dev/null 2> >(spike-dasm > $<.out) | tee $<.log)
+	(set -o pipefail && $(sim_debug) $(PERMISSIVE_ON) $(SIM_FLAGS) $(EXTRA_SIM_FLAGS) $(SEED_FLAG) $(VERBOSE_FLAGS) +vcdplusfile=$@ $(PERMISSIVE_OFF) $< </dev/null 2> >(spike-dasm > $<.out) | tee $<.log)
 
 #########################################################################################
 # general cleanup rules