diff --git a/R/method-fortify.R b/R/method-fortify.R
index d2f248ea..386752c9 100644
--- a/R/method-fortify.R
+++ b/R/method-fortify.R
@@ -448,7 +448,7 @@ as.phylo.phylo4 <- function(phylo4) {
 ##' @export
 ##' @author Yu Guangchuang
 fortify.phylo <- function(model, data, layout="rectangular",
-                          ladderize=TRUE, right=FALSE, mrsd=NULL, as.Date=FALSE,  ...) {
+                          ladderize=TRUE, right=FALSE, mrsd=NULL, as.Date=FALSE, ...) {
     tree <- reorder.phylo(model, 'postorder')
 
     if (ladderize == TRUE) {
diff --git a/R/tree-utilities.R b/R/tree-utilities.R
index 6e7d51e1..5b159e8a 100644
--- a/R/tree-utilities.R
+++ b/R/tree-utilities.R
@@ -742,7 +742,7 @@ set_branch_length <- function(tree_object, branch.length) {
     ## if (is(tree_object, "codeml")) {
     ##     tree_anno <- tree_object@mlc@dNdS
     ## } else
-        
+    
     if (is(tree_object, "codeml_mlc")) {
         tree_anno <- tree_object@dNdS
     } else if (is(tree_object, "beast")) {
@@ -757,7 +757,7 @@ set_branch_length <- function(tree_object, branch.length) {
     cn <- cn[!cn %in% c('node', 'parent')]
     
     length <- match.arg(branch.length, cn)
-    
+
     if (all(is.na(as.numeric(tree_anno[, length])))) {
         stop("branch.length should be numerical attributes...")
     }