diff --git a/build/image/dtc.py b/build/image/dtc.py
index 28a75c3..02314f2 100755
--- a/build/image/dtc.py
+++ b/build/image/dtc.py
@@ -21,7 +21,8 @@
 import subprocess
 import sys
 
-DTC = "dtc"
+HF_ROOT = os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
+DTC = os.path.join(HF_ROOT, "prebuilts", "linux-x64", "dtc", "dtc")
 
 def main():
     parser = argparse.ArgumentParser()
diff --git a/prebuilts b/prebuilts
index 16b7382..111f71d 160000
--- a/prebuilts
+++ b/prebuilts
@@ -1 +1 @@
-Subproject commit 16b7382f3c536e24326e716bde183501a698a78f
+Subproject commit 111f71d306f6c2fbfa075376524976305d9c93c4
diff --git a/test/hftest/hftest.py b/test/hftest/hftest.py
index 8f6dc6a..9a9019c 100755
--- a/test/hftest/hftest.py
+++ b/test/hftest/hftest.py
@@ -35,6 +35,8 @@
 HFTEST_LOG_FAILURE_PREFIX = "Failure:"
 HFTEST_LOG_FINISHED = "FINISHED"
 
+HF_ROOT = os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
+DTC_SCRIPT = os.path.join(HF_ROOT, "build", "image", "dtc.py")
 
 def log_timeout_returncode(f, returncode):
     if returncode == 0:
@@ -46,7 +48,6 @@
         f.write("\r\n{}{} process return code {}\r\n".format(
             HFTEST_LOG_PREFIX, HFTEST_LOG_FAILURE_PREFIX, returncode))
 
-
 def qemu(image, initrd, args, log):
     qemu_args = [
         "timeout", "--foreground", "10s",
@@ -75,10 +76,7 @@
     uart0_log = log + ".uart0"
     uart1_log = log + ".uart1"
     fdt = log + ".dtb"
-    dtc_args = [
-        "dtc", "-I", "dts", "-O", "dtb",
-        "-o", fdt,
-    ]
+    dtc_args = [ DTC_SCRIPT, "-o", fdt ]
     fvp_args = [
         "timeout", "--foreground", "40s",
         "../fvp/Base_RevC_AEMv8A_pkg/models/Linux64_GCC-4.9/FVP_Base_RevC-2xAEMv8A",