diff --git a/tests/zfs-tests/tests/functional/alloc_class/alloc_class_012_pos.ksh b/tests/zfs-tests/tests/functional/alloc_class/alloc_class_012_pos.ksh
index efb6c4754689..0b1c18bafdaf 100755
--- a/tests/zfs-tests/tests/functional/alloc_class/alloc_class_012_pos.ksh
+++ b/tests/zfs-tests/tests/functional/alloc_class/alloc_class_012_pos.ksh
@@ -34,6 +34,7 @@ function file_in_special_vdev # <dataset> <inode>
 	typeset dataset="$1"
 	typeset inum="$2"
 	typeset num_normal=$(echo $ZPOOL_DISKS | wc -w)
+	num_normal=${num_normal##* }
 
 	zdb -dddddd $dataset $inum | awk -v d=$num_normal '{
 # find DVAs from string "offset level dva" only for L0 (data) blocks
diff --git a/tests/zfs-tests/tests/functional/cli_root/zpool_events/zpool_events_clear.ksh b/tests/zfs-tests/tests/functional/cli_root/zpool_events/zpool_events_clear.ksh
index fe55591489ec..1df8ff441623 100755
--- a/tests/zfs-tests/tests/functional/cli_root/zpool_events/zpool_events_clear.ksh
+++ b/tests/zfs-tests/tests/functional/cli_root/zpool_events/zpool_events_clear.ksh
@@ -44,6 +44,7 @@ done
 # wait a bit to allow the kernel module to process new events
 zpool_events_settle
 EVENTS_NUM=$(zpool events -H | wc -l)
+EVENTS_NUM=${EVENTS_NUM##* }
 
 # 3. Verify 'zpool events -c' successfully clear new events
 CLEAR_OUTPUT=$(zpool events -c)
diff --git a/tests/zfs-tests/tests/functional/mv_files/mv_files_common.kshlib b/tests/zfs-tests/tests/functional/mv_files/mv_files_common.kshlib
index 4794d8ae94b6..3ddd8f113a3b 100644
--- a/tests/zfs-tests/tests/functional/mv_files/mv_files_common.kshlib
+++ b/tests/zfs-tests/tests/functional/mv_files/mv_files_common.kshlib
@@ -115,7 +115,7 @@ function mv_files
 function count_files
 {
         typeset -i file_num
-        file_num=$(find $1 -type f -print | wc -l)
+        file_num=$(find $1 -type f -print | wc -l | tr -d ' ')
         (( file_num != $2 )) && \
                 log_fail "The file number of target directory"\
                         "$2 is not equal to that of the source "\