diff --git a/build.sh b/build.sh
index dac91efc6d..039a06f983 100755
--- a/build.sh
+++ b/build.sh
@@ -13,7 +13,7 @@ cd $(dirname $0)
 basedir=$(pwd)
 osname=$(source $basedir/board/common/overlay/etc/version && echo $os_short_name)
 osversion=$(source $basedir/board/common/overlay/etc/version && echo $os_version)
-gzip=$(which pigz || which gzip)
+gzip=$(which pigz 2> /dev/null || which gzip 2> /dev/null)
 
 if [ "$board" == "all" ]; then
     boards=$(ls $basedir/configs/*_defconfig | grep -v initramfs | grep -oE '\w+_defconfig$' | cut -d '_' -f 1)
diff --git a/writeimage.sh b/writeimage.sh
index 99895df526..2bc1793ca8 100755
--- a/writeimage.sh
+++ b/writeimage.sh
@@ -76,7 +76,7 @@ if ! [ -f $DISK_IMG ]; then
     exit 1
 fi
 
-gunzip=$(which unpigz || which gunzip)
+gunzip=$(which unpigz 2> /dev/null || which gunzip 2> /dev/null)
 
 if [[ $DISK_IMG == *.gz ]]; then
     msg "decompressing the gzipped image"