diff --git a/config/sources/mvebu.conf b/config/sources/mvebu.conf
index 4fb91ef020..ac09270c1e 100644
--- a/config/sources/mvebu.conf
+++ b/config/sources/mvebu.conf
@@ -57,6 +57,6 @@ family_tweaks()
 {
 	# execute specific tweaks function if present
 	[[ $(type -t family_tweaks_s) == function ]] && family_tweaks_s
-	
+
 	chroot $SDCARD /bin/bash -c "apt-get -y -qq remove --auto-remove linux-sound-base alsa-base alsa-utils bluez>/dev/null 2>&1"
 }
diff --git a/config/sources/odroidc1.conf b/config/sources/odroidc1.conf
index b56daf49c4..5f4098f827 100644
--- a/config/sources/odroidc1.conf
+++ b/config/sources/odroidc1.conf
@@ -40,7 +40,6 @@ write_uboot_platform()
 
 family_tweaks()
 {
-
 	# enable service installed from BSP
 	chroot $SDCARD /bin/bash -c "systemctl --no-reload enable odroid-c1-hdmi.service >/dev/null 2>&1"
 }
diff --git a/config/sources/rockchip.conf b/config/sources/rockchip.conf
index 1f4f68e6fa..2407139089 100644
--- a/config/sources/rockchip.conf
+++ b/config/sources/rockchip.conf
@@ -62,8 +62,8 @@ family_tweaks()
 		echo "fdt_file=rk3288-miniarm.dtb" >> $SDCARD/boot/armbianEnv.txt
 		echo "console=ttyS3,115200n8" >> $SDCARD/boot/armbianEnv.txt
 		chroot $SDCARD /bin/bash -c "systemctl --no-reload enable tinker-bluetooth.service >/dev/null 2>&1"
-		chroot $SDCARD /bin/bash -c "sed -i -e '/#load-module module-alsa-sink/r /usr/local/bin/pulseaudio.txt' /etc/pulse/default.pa >/dev/null 2>&1"
-		chroot $SDCARD /bin/bash -c "rm /usr/local/bin/pulseaudio.txt"
+		sed -i -e '/#load-module module-alsa-sink/r $SDCARD/usr/local/bin/pulseaudio.txt' $SDCARD/etc/pulse/default.pa >/dev/null 2>&1
+		rm -f /usr/local/bin/pulseaudio.txt
 	fi
 }