diff --git a/boards/st/b_u585i_iot02a/pre_dt_board.cmake b/boards/st/b_u585i_iot02a/pre_dt_board.cmake
deleted file mode 100644
index 812d18cdf6c..00000000000
--- a/boards/st/b_u585i_iot02a/pre_dt_board.cmake
+++ /dev/null
@@ -1,3 +0,0 @@
-
-# SPI is implemented via octospi so node name isn't spi@...
-list(APPEND EXTRA_DTC_FLAGS "-Wno-spi_bus_bridge")