diff --git a/cmake/common/px4_base.cmake b/cmake/common/px4_base.cmake
index 2088e299c1e..66ea9ee45c2 100644
--- a/cmake/common/px4_base.cmake
+++ b/cmake/common/px4_base.cmake
@@ -820,7 +820,6 @@ function(px4_add_common_flags)
 
 	set(cxx_warnings
 		-Wno-missing-field-initializers
-		#-Weffc++
 		)
 
 	set(cxx_compile_flags
diff --git a/src/drivers/bmi160/CMakeLists.txt b/src/drivers/bmi160/CMakeLists.txt
index 8ef6b1d70a2..75609a1743f 100644
--- a/src/drivers/bmi160/CMakeLists.txt
+++ b/src/drivers/bmi160/CMakeLists.txt
@@ -35,7 +35,6 @@ px4_add_module(
 	MAIN bmi160
 	STACK_MAIN 1200
 	COMPILE_FLAGS
-		-Weffc++
 	SRCS
 		bmi160.cpp
 		bmi160_gyro.cpp
diff --git a/src/drivers/hmc5883/CMakeLists.txt b/src/drivers/hmc5883/CMakeLists.txt
index a2fa9316043..1c7b7683697 100644
--- a/src/drivers/hmc5883/CMakeLists.txt
+++ b/src/drivers/hmc5883/CMakeLists.txt
@@ -35,7 +35,6 @@ px4_add_module(
 	MAIN hmc5883
 	STACK_MAIN 1200
 	COMPILE_FLAGS
-		-Weffc++
 	SRCS
 		hmc5883_i2c.cpp
 		hmc5883_spi.cpp
diff --git a/src/drivers/ist8310/CMakeLists.txt b/src/drivers/ist8310/CMakeLists.txt
index 800ae07e7c0..67d2d59f8f2 100644
--- a/src/drivers/ist8310/CMakeLists.txt
+++ b/src/drivers/ist8310/CMakeLists.txt
@@ -35,7 +35,6 @@ px4_add_module(
 	MAIN ist8310
 	STACK_MAIN 1200
 	COMPILE_FLAGS
-		-Weffc++
 		-Os
 	SRCS
 		ist8310.cpp
diff --git a/src/drivers/l3gd20/CMakeLists.txt b/src/drivers/l3gd20/CMakeLists.txt
index f398fcd4391..0893db12049 100644
--- a/src/drivers/l3gd20/CMakeLists.txt
+++ b/src/drivers/l3gd20/CMakeLists.txt
@@ -35,7 +35,6 @@ px4_add_module(
 	MAIN l3gd20
 	STACK_MAIN 1200
 	COMPILE_FLAGS
-		-Weffc++
 	SRCS
 		l3gd20.cpp
 	DEPENDS
diff --git a/src/drivers/lis3mdl/CMakeLists.txt b/src/drivers/lis3mdl/CMakeLists.txt
index 1581c238b47..5f20fe8b2ae 100644
--- a/src/drivers/lis3mdl/CMakeLists.txt
+++ b/src/drivers/lis3mdl/CMakeLists.txt
@@ -35,7 +35,6 @@ px4_add_module(
 	MAIN lis3mdl
 	STACK_MAIN 1200
 	COMPILE_FLAGS
-		-Weffc++
 	SRCS
 		lis3mdl_i2c.cpp
 		lis3mdl_spi.cpp
diff --git a/src/drivers/lps25h/CMakeLists.txt b/src/drivers/lps25h/CMakeLists.txt
index db8edefebe7..75fe641bb52 100644
--- a/src/drivers/lps25h/CMakeLists.txt
+++ b/src/drivers/lps25h/CMakeLists.txt
@@ -35,7 +35,6 @@ px4_add_module(
 	MAIN lps25h
 	STACK_MAIN 1200
 	COMPILE_FLAGS
-		-Weffc++
 	SRCS
 		lps25h.cpp
 		lps25h_i2c.cpp
diff --git a/src/drivers/lsm303d/CMakeLists.txt b/src/drivers/lsm303d/CMakeLists.txt
index 96794af0601..9d2d36dced1 100644
--- a/src/drivers/lsm303d/CMakeLists.txt
+++ b/src/drivers/lsm303d/CMakeLists.txt
@@ -35,7 +35,6 @@ px4_add_module(
 	MAIN lsm303d
 	STACK_MAIN 1200
 	COMPILE_FLAGS
-		-Weffc++
 	SRCS
 		lsm303d.cpp
 	DEPENDS
diff --git a/src/drivers/meas_airspeed/CMakeLists.txt b/src/drivers/meas_airspeed/CMakeLists.txt
index a1b153affb4..0cdac0cbd5b 100644
--- a/src/drivers/meas_airspeed/CMakeLists.txt
+++ b/src/drivers/meas_airspeed/CMakeLists.txt
@@ -35,7 +35,6 @@ px4_add_module(
 	MAIN meas_airspeed
 	STACK_MAIN 1200
 	COMPILE_FLAGS
-		-Weffc++
 	SRCS
 		meas_airspeed.cpp
 	DEPENDS
diff --git a/src/drivers/mpu6000/CMakeLists.txt b/src/drivers/mpu6000/CMakeLists.txt
index 1c7f33d23a6..274b162e117 100644
--- a/src/drivers/mpu6000/CMakeLists.txt
+++ b/src/drivers/mpu6000/CMakeLists.txt
@@ -35,7 +35,6 @@ px4_add_module(
 	MAIN mpu6000
 	STACK_MAIN 1400
 	COMPILE_FLAGS
-		-Weffc++
 	SRCS
 		mpu6000.cpp
 		mpu6000_i2c.cpp
diff --git a/src/drivers/mpu6500/CMakeLists.txt b/src/drivers/mpu6500/CMakeLists.txt
index 85d8706cb4c..4f9ee76c19d 100644
--- a/src/drivers/mpu6500/CMakeLists.txt
+++ b/src/drivers/mpu6500/CMakeLists.txt
@@ -35,7 +35,6 @@ px4_add_module(
 	MAIN mpu6500
 	STACK_MAIN 1200
 	COMPILE_FLAGS
-		-Weffc++
 	SRCS
 		mpu6500.cpp
 	DEPENDS
diff --git a/src/drivers/mpu9250/CMakeLists.txt b/src/drivers/mpu9250/CMakeLists.txt
index c37351b7686..bb2080e9d24 100644
--- a/src/drivers/mpu9250/CMakeLists.txt
+++ b/src/drivers/mpu9250/CMakeLists.txt
@@ -35,7 +35,6 @@ px4_add_module(
 	MAIN mpu9250
 	STACK_MAIN 1200
 	COMPILE_FLAGS
-		-Weffc++
 	SRCS
 		mpu9250.cpp
 		mpu9250_i2c.cpp
diff --git a/src/drivers/px4fmu/CMakeLists.txt b/src/drivers/px4fmu/CMakeLists.txt
index 576ba2ec511..24921c1e5ce 100644
--- a/src/drivers/px4fmu/CMakeLists.txt
+++ b/src/drivers/px4fmu/CMakeLists.txt
@@ -35,7 +35,6 @@ px4_add_module(
 	MAIN fmu
 	STACK_MAIN 1200
 	COMPILE_FLAGS
-		-Weffc++
 	SRCS
 		fmu.cpp
 	DEPENDS
diff --git a/src/drivers/test_ppm/CMakeLists.txt b/src/drivers/test_ppm/CMakeLists.txt
index 11ce7f3d00f..f1f8a4f3926 100644
--- a/src/drivers/test_ppm/CMakeLists.txt
+++ b/src/drivers/test_ppm/CMakeLists.txt
@@ -35,7 +35,6 @@ px4_add_module(
 	MAIN test_ppm
 	STACK_MAIN 1200
 	COMPILE_FLAGS
-		-Weffc++
 	SRCS
 		test_ppm.cpp
 	DEPENDS
diff --git a/src/platforms/qurt/fc_addon/mpu_spi/CMakeLists.txt b/src/platforms/qurt/fc_addon/mpu_spi/CMakeLists.txt
index 5dda5c759a9..a88e796746a 100644
--- a/src/platforms/qurt/fc_addon/mpu_spi/CMakeLists.txt
+++ b/src/platforms/qurt/fc_addon/mpu_spi/CMakeLists.txt
@@ -53,7 +53,6 @@ px4_add_module(
 	MAIN mpu9x50
 	STACK_MAIN 1200
 	COMPILE_FLAGS
-		-Weffc++
 	SRCS
 		mpu9x50_main.cpp
 		mpu9x50_params.c
diff --git a/src/platforms/qurt/fc_addon/rc_receiver/CMakeLists.txt b/src/platforms/qurt/fc_addon/rc_receiver/CMakeLists.txt
index 98b69cab043..af8708768f3 100644
--- a/src/platforms/qurt/fc_addon/rc_receiver/CMakeLists.txt
+++ b/src/platforms/qurt/fc_addon/rc_receiver/CMakeLists.txt
@@ -53,7 +53,6 @@ px4_add_module(
         MAIN rc_receiver
 	STACK_MAIN 1200
         COMPILE_FLAGS
-                -Weffc++
         SRCS
                 rc_receiver_main.cpp
 		rc_receiver_params.c
diff --git a/src/platforms/qurt/fc_addon/uart_esc/CMakeLists.txt b/src/platforms/qurt/fc_addon/uart_esc/CMakeLists.txt
index b9fec0e3431..174bf64dd08 100644
--- a/src/platforms/qurt/fc_addon/uart_esc/CMakeLists.txt
+++ b/src/platforms/qurt/fc_addon/uart_esc/CMakeLists.txt
@@ -53,7 +53,6 @@ px4_add_module(
         MAIN uart_esc
 	STACK_MAIN 1200
         COMPILE_FLAGS
-                -Weffc++
         SRCS
                 uart_esc_main.cpp
 		uart_esc_params.c