diff --git a/cmake/common/px4_base.cmake b/cmake/common/px4_base.cmake
index 9a0b17b7a2..6853b4f161 100644
--- a/cmake/common/px4_base.cmake
+++ b/cmake/common/px4_base.cmake
@@ -543,6 +543,7 @@ function(px4_add_common_flags)
 	endif()
 
 	set(c_warnings
+		-Wbad-function-cast
 		-Wstrict-prototypes
 		-Wmissing-prototypes
 		-Wnested-externs