diff --git a/plugins/overlay-warning/overlay-warning-plugin.cpp b/plugins/overlay-warning/overlay-warning-plugin.cpp
index 66d8f3978..85e724b61 100644
--- a/plugins/overlay-warning/overlay-warning-plugin.cpp
+++ b/plugins/overlay-warning/overlay-warning-plugin.cpp
@@ -145,7 +145,10 @@ bool OverlayWarningPlugin::isOverlayRoot()
 {
     // ignore live/recovery mode
     QFile cmdline("/proc/cmdline");
-    cmdline.open(QFile::ReadOnly);
+    if (!cmdline.open(QIODevice::ReadOnly)) {
+        qWarning() << "open /proc/cmdline failed! please check permission!!!";
+        return false;
+    }
     QString content(cmdline.readAll());
     cmdline.close();
     if (content.contains("boot=live")) {
diff --git a/plugins/shutdown/shutdownplugin.cpp b/plugins/shutdown/shutdownplugin.cpp
index ec5b961fb..7b0332623 100644
--- a/plugins/shutdown/shutdownplugin.cpp
+++ b/plugins/shutdown/shutdownplugin.cpp
@@ -343,6 +343,8 @@ qint64 ShutdownPlugin::get_power_image_size()
     if (file.open(QIODevice::Text | QIODevice::ReadOnly)) {
         size = file.readAll().trimmed().toLongLong();
         file.close();
+    } else{
+        qWarning() << "open /sys/power/image_size failed! please check permission!!!";
     }
 
     return size;
@@ -374,7 +376,7 @@ bool ShutdownPlugin::checkSwap()
 
         file.close();
     } else {
-        qDebug() << "open /proc/swaps failed! please check permission!!!";
+        qWarning() << "open /proc/swaps failed! please check permission!!!";
     }
 
     return hasSwap;