diff --git a/dce.go b/dce.go
old mode 100755
new mode 100644
diff --git a/doc.go b/doc.go
old mode 100755
new mode 100644
diff --git a/node.go b/node.go
old mode 100755
new mode 100644
diff --git a/time.go b/time.go
old mode 100755
new mode 100644