diff --git a/pw_stm32cube_build/py/pw_stm32cube_build/find_files.py b/pw_stm32cube_build/py/pw_stm32cube_build/find_files.py
index 903c05b..6e233ef 100644
--- a/pw_stm32cube_build/py/pw_stm32cube_build/find_files.py
+++ b/pw_stm32cube_build/py/pw_stm32cube_build/find_files.py
@@ -209,6 +209,7 @@
     'hal_driver/Inc/Legacy',
     'cmsis_device/Include',
     'cmsis_core/Include',
+    'cmsis_core/DSP/Include',
 ]