diff --git a/src/modules/systemlib/mixer/CMakeLists.txt b/src/modules/systemlib/mixer/CMakeLists.txt
index daa2bcd282..43facba5d6 100644
--- a/src/modules/systemlib/mixer/CMakeLists.txt
+++ b/src/modules/systemlib/mixer/CMakeLists.txt
@@ -33,23 +33,22 @@
 
 include_directories(${CMAKE_CURRENT_BINARY_DIR})
 
-add_custom_command(OUTPUT mixer_multirotor.generated.h
-	COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/multi_tables.py
-	> mixer_multirotor.generated.h)
+add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/mixer_multirotor.generated.h
+	COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/multi_tables.py > ${CMAKE_CURRENT_BINARY_DIR}/mixer_multirotor.generated.h
+	DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/multi_tables.py
+	)
 
-add_custom_target(mixer_gen
-	DEPENDS mixer_multirotor.generated.h multi_tables.py)
+add_custom_target(mixer_gen DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/mixer_multirotor.generated.h)
 
 px4_add_module(
 	MODULE modules__systemlib__mixer
 	SRCS
 		mixer.cpp
 		mixer_group.cpp
-		mixer_multirotor.cpp
-		mixer_simple.cpp
 		mixer_helicopter.cpp
 		mixer_load.c
-		mixer_multirotor.generated.h
+		mixer_multirotor.cpp
+		mixer_simple.cpp
 	DEPENDS
 		platforms__common
 		mixer_gen