diff --git a/common/dump b/common/dump
index ea16d442..44a9a708 100644
--- a/common/dump
+++ b/common/dump
@@ -526,7 +526,7 @@ _do_create_dumpdir_fill()
 	    fi
 	fi
 	if [ -n "$owner" -a -n "$group" ]; then
-	    chown $owner.$group $file
+	    chown $owner:$group $file
 	fi
 	if [ -n "$perms" ]; then
 	    chmod $perms $file
@@ -691,10 +691,10 @@ _do_create_dump_symlinks()
 	fi
 
 	if [ -n "$owner" -a -n "$group" ]; then
-	    chown $owner.$group $file
+	    chown $owner:$group $file
 	fi
 	if [ -n "$owner" -a -n "$group" ]; then
-	    chown -h $owner.$group $file-link
+	    chown -h $owner:$group $file-link
 	fi
 	if [ -n "$perms" ]; then
 	    chmod $perms $file
diff --git a/tests/generic/099 b/tests/generic/099
index 6ba04dd8..5cdac9ab 100755
--- a/tests/generic/099
+++ b/tests/generic/099
@@ -74,7 +74,7 @@ EOF
 chmod u=rwx file1
 chmod g=rw- file1
 chmod o=r-- file1
-chown $acl1.$acl2 file1
+chown $acl1:$acl2 file1
 _acl_ls file1
 
 echo ""
@@ -264,7 +264,7 @@ do
 	touch a/$i/mumble
 done
 popd >/dev/null
-chown -R 12345.54321 root
+chown -R 12345:54321 root
 echo "Change #1..."
 _runas -u 12345 -g 54321 -- chacl -r u::rwx,g::-w-,o::--x root
 find root -print | sort | xargs chacl -l
diff --git a/tests/generic/237 b/tests/generic/237
index 93eafd84..f17e32e4 100755
--- a/tests/generic/237
+++ b/tests/generic/237
@@ -38,7 +38,7 @@ mkdir $seq.dir1
 cd $seq.dir1
 
 touch file1
-chown $acl1.$acl1 file1
+chown $acl1:$acl1 file1
 
 echo "Expect to FAIL"
 _runas -u $acl2 -g $acl2 -- setfacl -m u::rwx file1 2>&1 | sed 's/^setfacl: \/.*file1: Operation not permitted$/setfacl: file1: Operation not permitted/'
diff --git a/tests/generic/318 b/tests/generic/318
index 5edc9f35..ed50818a 100755
--- a/tests/generic/318
+++ b/tests/generic/318
@@ -72,7 +72,7 @@ _scratch_mkfs       >>$seqres.full 2>&1 || _fail "mkfs failed"
 _scratch_mount
 
 touch $file
-chown $acl1.$acl1 $file
+chown $acl1:$acl1 $file
 
 # set acls from init_user_ns, to be checked from inside the userns
 setfacl -n -m u:$acl2:rw,g:$acl2:r $file
diff --git a/tests/generic/380 b/tests/generic/380
index 4993dad0..21b789dd 100755
--- a/tests/generic/380
+++ b/tests/generic/380
@@ -35,7 +35,7 @@ _chowning_file()
 	let count=$start
 	while (( count < limit )); do
 	    touch $file
-	    chown $count.$count $file
+	    chown $count:$count $file
 	    echo -n "."
 	    let count=count+delta
 	done
diff --git a/tests/generic/597 b/tests/generic/597
index aa93237e..ff985ca6 100755
--- a/tests/generic/597
+++ b/tests/generic/597
@@ -46,8 +46,8 @@ HARDLINK_PROTECTION=`sysctl -n fs.protected_hardlinks`
 test_symlink()
 {
 	ln -s $TEST_DIR/$seq/target $TEST_DIR/$seq/sticky_dir/symlink
-	chown $OTHER.$OTHER $TEST_DIR/$seq/sticky_dir
-	chown $OWNER.$OWNER $TEST_DIR/$seq/sticky_dir/symlink
+	chown $OTHER:$OTHER $TEST_DIR/$seq/sticky_dir
+	chown $OWNER:$OWNER $TEST_DIR/$seq/sticky_dir/symlink
 	# If we can read the target, we followed the link
 	_user_do "cat $TEST_DIR/$seq/sticky_dir/symlink" | _filter_test_dir
 	rm -f $TEST_DIR/$seq/sticky_dir/symlink
@@ -55,7 +55,7 @@ test_symlink()
 
 test_hardlink()
 {
-	chown $OWNER.$OWNER $TEST_DIR/$seq/target
+	chown $OWNER:$OWNER $TEST_DIR/$seq/target
 	chmod go-rw $TEST_DIR/$seq/target
 	_user_do "ln $TEST_DIR/$seq/target $TEST_DIR/$seq/sticky_dir/hardlink" \
 		| _filter_test_dir
diff --git a/tests/generic/598 b/tests/generic/598
index 160e6d4b..769c1b1a 100755
--- a/tests/generic/598
+++ b/tests/generic/598
@@ -64,16 +64,16 @@ setup_tree()
 	mkdir -p $TEST_DIR/$seq
 	mkdir -p $TEST_DIR/$seq/sticky_dir
 	chmod 1777 $TEST_DIR/$seq/sticky_dir
-	chown $USER2.$USER2 $TEST_DIR/$seq/sticky_dir
+	chown $USER2:$USER2 $TEST_DIR/$seq/sticky_dir
 
 	# Create file & fifo in that dir owned by $USER1, and open
 	# normal read/write privs for world & group
 	$XFS_IO_PROG -c "open -f $TEST_DIR/$seq/sticky_dir/file"
-	chown $USER1.$USER1 $TEST_DIR/$seq/sticky_dir/file
+	chown $USER1:$USER1 $TEST_DIR/$seq/sticky_dir/file
 	chmod o+rw $TEST_DIR/$seq/sticky_dir/file
 
 	mkfifo $TEST_DIR/$seq/sticky_dir/fifo
-	chown $USER1.$USER1 $TEST_DIR/$seq/sticky_dir/fifo
+	chown $USER1:$USER1 $TEST_DIR/$seq/sticky_dir/fifo
 	chmod o+rw $TEST_DIR/$seq/sticky_dir/fifo
 }
 
