diff --git a/src/modules/logger/CMakeLists.txt b/src/modules/logger/CMakeLists.txt
index 9d60069745..58ecc3f837 100644
--- a/src/modules/logger/CMakeLists.txt
+++ b/src/modules/logger/CMakeLists.txt
@@ -36,6 +36,7 @@ px4_add_module(
 	MAIN logger
 	PRIORITY "SCHED_PRIORITY_MAX-30"
 	COMPILE_FLAGS
+		${MAX_CUSTOM_OPT_LEVEL}
 		-Wno-cast-align # TODO: fix and enable
 	SRCS
 		logged_topics.cpp