diff --git a/hw/efinix_fpga/simulation/Makefile b/hw/efinix_fpga/simulation/Makefile
index 06423f0..d215b5f 100644
--- a/hw/efinix_fpga/simulation/Makefile
+++ b/hw/efinix_fpga/simulation/Makefile
@@ -33,6 +33,7 @@ $(INIT_MEM):
 
 # The script that makes this file uses relative paths
 $(SD_IMAGE): $(SD_IMAGE_PATH)
+	sh $(REPO_TOP)/sw/script/create_verilog_image.sh
 	cp $(SD_IMAGE_PATH) $(SD_IMAGE)
 
 .PHONY: clean
diff --git a/sw/script/create_verilog_image.sh b/sw/script/create_verilog_image.sh
index 323bc45..83ac7cf 100644
--- a/sw/script/create_verilog_image.sh
+++ b/sw/script/create_verilog_image.sh
@@ -1,11 +1,11 @@
 
 #!/bin/bash
 
-BOOTLOADER=../bios/bootloader.bin
+BOOTLOADER=$REPO_TOP/sw/bios/bootloader.bin
 FILE=fs.fat
 
 TMPMOUNT=/tmp/lo
-FSDIR=../fsdir
+FSDIR=$REPO_TOP/sw/fsdir
 
 V=-v
 
diff --git a/sw/script/format_disk.sh b/sw/script/format_disk.sh
index af66e59..8c77237 100644
--- a/sw/script/format_disk.sh
+++ b/sw/script/format_disk.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-BOOTLOADER=../bios/bootloader.bin
+BOOTLOADER=$REPO_TOP/sw/bios/bootloader.bin
 DEVICE=/dev/mmcblk0
 TMPBOOTSECT=/tmp/bootsect
 TMPMOUNT=/tmp/sd