diff --git a/cmd/restic/cmd_ls.go b/cmd/restic/cmd_ls.go
index 8dd2af2d6..6e48b010f 100644
--- a/cmd/restic/cmd_ls.go
+++ b/cmd/restic/cmd_ls.go
@@ -193,10 +193,13 @@ func lsNcduNode(_ string, node *restic.Node) ([]byte, error) {
 		Mtime  int64  `json:"mtime"`
 	}
 
+	const blockSize = 512
+
 	outNode := NcduNode{
-		Name:   node.Name,
-		Asize:  node.Size,
-		Dsize:  node.Size,
+		Name:  node.Name,
+		Asize: node.Size,
+		// round up to nearest full blocksize
+		Dsize:  (node.Size + blockSize - 1) / blockSize * blockSize,
 		Dev:    node.DeviceID,
 		Ino:    node.Inode,
 		NLink:  node.Links,
diff --git a/cmd/restic/cmd_ls_test.go b/cmd/restic/cmd_ls_test.go
index a59b5f81b..194975053 100644
--- a/cmd/restic/cmd_ls_test.go
+++ b/cmd/restic/cmd_ls_test.go
@@ -109,7 +109,7 @@ func TestLsNodeJSON(t *testing.T) {
 
 func TestLsNcduNode(t *testing.T) {
 	for i, expect := range []string{
-		`{"name":"baz","asize":12345,"dsize":12345,"dev":0,"ino":0,"nlink":1,"notreg":false,"uid":10000000,"gid":20000000,"mode":0,"mtime":-62135596800}`,
+		`{"name":"baz","asize":12345,"dsize":12800,"dev":0,"ino":0,"nlink":1,"notreg":false,"uid":10000000,"gid":20000000,"mode":0,"mtime":-62135596800}`,
 		`{"name":"empty","asize":0,"dsize":0,"dev":0,"ino":0,"nlink":3840,"notreg":false,"uid":1001,"gid":1001,"mode":0,"mtime":-62135596800}`,
 		`{"name":"link","asize":0,"dsize":0,"dev":0,"ino":0,"nlink":0,"notreg":true,"uid":0,"gid":0,"mode":511,"mtime":-62135596800}`,
 		`{"name":"directory","asize":0,"dsize":0,"dev":0,"ino":0,"nlink":0,"notreg":false,"uid":0,"gid":0,"mode":493,"mtime":1577934245}`,
@@ -152,7 +152,7 @@ func TestLsNcdu(t *testing.T) {
 	rtest.Equals(t, `[1, 2, {"time":"0001-01-01T00:00:00Z","tree":null,"paths":["/example"],"hostname":"host"},
   [
     {"name":"directory","asize":0,"dsize":0,"dev":0,"ino":0,"nlink":0,"notreg":false,"uid":0,"gid":0,"mode":0,"mtime":-62135596800},
-    {"name":"data","asize":42,"dsize":42,"dev":0,"ino":0,"nlink":0,"notreg":false,"uid":0,"gid":0,"mode":0,"mtime":-62135596800}
+    {"name":"data","asize":42,"dsize":512,"dev":0,"ino":0,"nlink":0,"notreg":false,"uid":0,"gid":0,"mode":0,"mtime":-62135596800}
   ]
 ]
 `, buf.String())