diff --git a/Makefile b/Makefile
index 0e74fdedb30a0753cc97f6cc8bed9baaf049b5e4..1716b82a4964b5ba36ae0d3f11f74c5e4f402dec 100644
--- a/Makefile
+++ b/Makefile
@@ -108,12 +108,12 @@ VERILATOR_FLAGS = --top-module $(EMU_TOP) \
   +define+VERILATOR=1 \
   +define+PRINTF_COND=1 \
   +define+RANDOMIZE_MEM_INIT \
+  +define+RANDOMIZE_REG_INIT \
   $(VEXTRA_FLAGS) \
   --assert \
   --stats-vars \
   --output-split 5000 \
   --output-split-cfuncs 5000
-  #+define+RANDOMIZE_REG_INIT \
 
 EMU_MK := $(BUILD_DIR)/emu-compile/V$(EMU_TOP).mk
 EMU_DEPS := $(EMU_VFILES) $(EMU_CXXFILES)