diff --git a/conf/machine/raspberrypi3.conf b/conf/machine/raspberrypi3.conf
index cb6056e..438c6e6 100644
--- a/conf/machine/raspberrypi3.conf
+++ b/conf/machine/raspberrypi3.conf
@@ -9,3 +9,5 @@ MACHINE_EXTRA_RRECOMMENDS += "linux-firmware-brcm43430"
 include conf/machine/raspberrypi2.conf
 
 SERIAL_CONSOLE = "115200 ttyS0"
+VC4_CMA_SIZE ?= "cma-256"
+