diff --git a/test/hil/hfp.json b/test/hil/hfp.json
index e79a3cfc9..386d9816b 100644
--- a/test/hil/hfp.json
+++ b/test/hil/hfp.json
@@ -10,6 +10,7 @@
         {
             "name": "stm32f746disco",
             "uid": "210041000C51343237303334",
+            "build_flags_on": ["", "CFG_TUD_DWC2_DMA"],
             "flasher": "jlink",
             "flasher_sn": "770935966",
             "flasher_args": "-device STM32F746NG"
diff --git a/test/hil/hil_ci_set_matrix.py b/test/hil/hil_ci_set_matrix.py
index d1329f035..192174e16 100644
--- a/test/hil/hil_ci_set_matrix.py
+++ b/test/hil/hil_ci_set_matrix.py
@@ -27,8 +27,8 @@ def main():
         else:
             toolchain = 'arm-gcc'
 
-        if 'build_flags_on' in board:
-            for f in board['build_flags_on']:
+        if 'build' in board and 'flags_on' in board['build']:
+            for f in board['build']['flags_on']:
                 if f == '':
                     matrix[toolchain].append(f'-b {name}')
                 else:
diff --git a/test/hil/tinyusb.json b/test/hil/tinyusb.json
index 7627e7482..1eaa08207 100644
--- a/test/hil/tinyusb.json
+++ b/test/hil/tinyusb.json
@@ -79,7 +79,9 @@
         {
             "name": "espressif_s3_devkitm",
             "uid": "84F703C084E4",
-            "build_flags_on": ["", "CFG_TUD_DWC2_DMA"],
+            "build" : {
+                "flags_on": ["", "CFG_TUD_DWC2_DMA"]
+            },
             "tests": {
                 "only": ["device/cdc_msc_freertos", "device/hid_composite_freertos"]
             },