diff --git a/boards/px4/fmu-v2/fixedwing.cmake b/boards/px4/fmu-v2/fixedwing.cmake
index c90b5b88e8..1a480df95b 100644
--- a/boards/px4/fmu-v2/fixedwing.cmake
+++ b/boards/px4/fmu-v2/fixedwing.cmake
@@ -9,6 +9,7 @@ px4_add_board(
 	ROMFSROOT px4fmu_common
 	IO px4_io-v2_default
 	#TESTING
+	CONSTRAINED_FLASH
 	#UAVCAN_INTERFACES 2
 
 	SERIAL_PORTS
diff --git a/boards/px4/fmu-v2/lpe.cmake b/boards/px4/fmu-v2/lpe.cmake
index 48ead8e6ee..257a6fb71b 100644
--- a/boards/px4/fmu-v2/lpe.cmake
+++ b/boards/px4/fmu-v2/lpe.cmake
@@ -10,6 +10,7 @@ px4_add_board(
 	BOOTLOADER ${PX4_SOURCE_DIR}/ROMFS/px4fmu_common/extras/px4fmuv3_bl.bin
 	IO px4_io-v2_default
 	#TESTING
+	CONSTRAINED_FLASH
 	#UAVCAN_INTERFACES 2
 
 	SERIAL_PORTS
diff --git a/boards/px4/fmu-v2/rover.cmake b/boards/px4/fmu-v2/rover.cmake
index 1fa9c5dcf9..e1f2d34c23 100644
--- a/boards/px4/fmu-v2/rover.cmake
+++ b/boards/px4/fmu-v2/rover.cmake
@@ -8,6 +8,7 @@ px4_add_board(
 	ARCHITECTURE cortex-m4
 	ROMFSROOT px4fmu_common
 	IO px4_io-v2_default
+	CONSTRAINED_FLASH
 
 	SERIAL_PORTS
 		GPS1:/dev/ttyS3
diff --git a/boards/px4/fmu-v2/test.cmake b/boards/px4/fmu-v2/test.cmake
index a3de52cf9b..a539b78819 100644
--- a/boards/px4/fmu-v2/test.cmake
+++ b/boards/px4/fmu-v2/test.cmake
@@ -10,6 +10,7 @@ px4_add_board(
 	IO px4_io-v2_default
 	TESTING
 	#UAVCAN_INTERFACES 2
+	CONSTRAINED_FLASH
 
 	SERIAL_PORTS
 		GPS1:/dev/ttyS0