diff --git a/configs/sama5d3x-ek/hello/defconfig b/configs/sama5d3x-ek/hello/defconfig
index a4ca8fa651..4c9f530752 100644
--- a/configs/sama5d3x-ek/hello/defconfig
+++ b/configs/sama5d3x-ek/hello/defconfig
@@ -199,8 +199,8 @@ CONFIG_ARCH_STACKDUMP=y
 #
 CONFIG_BOARD_LOOPSPERMSEC=16717
 # CONFIG_ARCH_CALIBRATION is not set
-CONFIG_RAM_START=0x20000000
-CONFIG_RAM_VSTART=0x20000000
+CONFIG_RAM_START=0x00300000
+CONFIG_RAM_VSTART=0x00300000
 CONFIG_RAM_SIZE=114688
 CONFIG_ARCH_HAVE_INTERRUPTSTACK=y
 CONFIG_ARCH_INTERRUPTSTACK=0
diff --git a/configs/sama5d3x-ek/ostest/defconfig b/configs/sama5d3x-ek/ostest/defconfig
index b47bc69a04..d7b67e2e48 100644
--- a/configs/sama5d3x-ek/ostest/defconfig
+++ b/configs/sama5d3x-ek/ostest/defconfig
@@ -199,8 +199,8 @@ CONFIG_ARCH_STACKDUMP=y
 #
 CONFIG_BOARD_LOOPSPERMSEC=16717
 # CONFIG_ARCH_CALIBRATION is not set
-CONFIG_RAM_START=0x20000000
-CONFIG_RAM_VSTART=0x20000000
+CONFIG_RAM_START=0x00300000
+CONFIG_RAM_VSTART=0x00300000
 CONFIG_RAM_SIZE=114688
 CONFIG_ARCH_HAVE_INTERRUPTSTACK=y
 CONFIG_ARCH_INTERRUPTSTACK=0