diff --git a/acceptance-notifications/27/Acceptance-Notification.pdf b/acceptance-notifications/27/Acceptance-Notification.pdf
old mode 100755
new mode 100644
diff --git a/acceptance-notifications/53/Acceptance-Notification.pdf b/acceptance-notifications/53/Acceptance-Notification.pdf
old mode 100755
new mode 100644
diff --git a/acceptance-notifications/61/Acceptance-Notification.pdf b/acceptance-notifications/61/Acceptance-Notification.pdf
old mode 100755
new mode 100644
diff --git a/acceptance-notifications/66/Acceptance-Notification.pdf b/acceptance-notifications/66/Acceptance-Notification.pdf
old mode 100755
new mode 100644
diff --git a/acceptance-notifications/88/Acceptance-Notification.pdf b/acceptance-notifications/88/Acceptance-Notification.pdf
old mode 100755
new mode 100644
diff --git a/acceptance-notifications/99/Acceptance-Notification.pdf b/acceptance-notifications/99/Acceptance-Notification.pdf
old mode 100755
new mode 100644
diff --git a/doc/CallforPaper-CN.pdf b/doc/CallforPaper-CN.pdf
old mode 100755
new mode 100644