diff --git a/test/lib/bdev/blockdev.sh b/test/lib/bdev/blockdev.sh
index 2d37f5b1b..508b67407 100755
--- a/test/lib/bdev/blockdev.sh
+++ b/test/lib/bdev/blockdev.sh
@@ -17,7 +17,7 @@ timing_enter bounds
 $testdir/bdevio/bdevio $testdir/bdev.conf
 timing_exit bounds
 
-if [ $(uname -s) = Linux ] && [ -f /usr/sbin/sgdisk ]; then
+if [ $(uname -s) = Linux ] && hash sgdisk; then
 	echo "[Rpc]" >> $testdir/bdev.conf
 	echo "  Enable Yes" >> $testdir/bdev.conf
 
@@ -33,8 +33,8 @@ if [ $(uname -s) = Linux ] && [ -f /usr/sbin/sgdisk ]; then
 		if [ -e /dev/nbd0 ]; then
 			parted -s /dev/nbd0 mklabel gpt mkpart first '0%' '50%' mkpart second '50%' '100%'
 			# change the partition type GUID to SPDK GUID value
-			/usr/sbin/sgdisk -t 1:$SPDK_GPT_GUID /dev/nbd0
-			/usr/sbin/sgdisk -t 2:$SPDK_GPT_GUID /dev/nbd0
+			sgdisk -t 1:$SPDK_GPT_GUID /dev/nbd0
+			sgdisk -t 2:$SPDK_GPT_GUID /dev/nbd0
 		fi
 		killprocess $nbd_pid