diff --git a/variants/m5stack_unit_c6l/platformio.ini b/variants/m5stack_unit_c6l/platformio.ini
index 190add043..ea4d852d6 100644
--- a/variants/m5stack_unit_c6l/platformio.ini
+++ b/variants/m5stack_unit_c6l/platformio.ini
@@ -2,6 +2,7 @@
 extends = esp32c6_base
 board = esp32-c6-devkitm-1
 board_build.partitions = min_spiffs.csv ; get around 4mb flash limit
+board_build.flash_mode = dio ; board manifest defaults to qio, which causes a boot crash-loop on this module
 build_flags =
   ${esp32c6_base.build_flags}
   ${sensor_base.build_flags}