diff --git a/verilog/dv/microwatt/make.env b/verilog/dv/microwatt/make.env
index 07e8925..5ada673 100644
--- a/verilog/dv/microwatt/make.env
+++ b/verilog/dv/microwatt/make.env
@@ -36,7 +36,7 @@
 POWERPC_CFLAGS=-static -Os -g -Wall -std=c99 -msoft-float -mno-string -mno-multiple -mno-vsx -mno-altivec -mlittle-endian -fno-stack-protector -ffreestanding -fdata-sections -ffunction-sections -nostdlib -I../include
 
 ## Simulation mode: RTL/GL
-SIM_DEFINES = -DFUNCTIONAL -DSIM
+SIM_DEFINES = -DFUNCTIONAL -DSIM -DUNIT_DELAY=\#1 -DUSE_POWER_PINS
 SIM?=RTL
 
 .SUFFIXES:
diff --git a/verilog/dv/microwatt/make.rules b/verilog/dv/microwatt/make.rules
index 17cf027..3d17955 100644
--- a/verilog/dv/microwatt/make.rules
+++ b/verilog/dv/microwatt/make.rules
@@ -22,8 +22,8 @@
 %.vvp: %_tb.v microwatt.hex check-env
 ifeq ($(SIM),RTL)
 	iverilog $(SIM_DEFINES) -I $(PDK_PATH) \
-	-I $(CARAVEL_BEHAVIOURAL_MODELS) -I $(CARAVEL_RTL_PATH) \
-	-I $(UPRJ_BEHAVIOURAL_MODELS) -I $(UPRJ_RTL_PATH) \
+	-I $(CARAVEL_BEHAVIOURAL_MODELS) -I $(CARAVEL_RTL_PATH) -I $(CARAVEL_VERILOG_PATH) \
+	-I $(UPRJ_BEHAVIOURAL_MODELS) -I $(UPRJ_RTL_PATH) -I $(UPRJ_VERILOG_PATH) \
 	-I $(CARAVEL_MGMT_RTL_PATH) \
 	$< -o $@ 
 else