diff --git a/src/lib/appinfo.cpp b/src/lib/appinfo.cpp
index 12162d6..87f0483 100644
--- a/src/lib/appinfo.cpp
+++ b/src/lib/appinfo.cpp
@@ -219,7 +219,7 @@ std::vector<std::string> AppInfoManger::getAppList(std::string mimeType)
 }
 
 
-bool AppInfoManger::getDefaultApp(std::string mimeType, std::string desktopId)
+bool AppInfoManger::setDefaultApp(std::string mimeType, std::string desktopId)
 {
     GDesktopAppInfo* gDesktopAppInfo = g_desktop_app_info_new(desktopId.c_str());
 
@@ -229,7 +229,7 @@ bool AppInfoManger::getDefaultApp(std::string mimeType, std::string desktopId)
 
     GAppInfo* gAppInfo = G_APP_INFO(gDesktopAppInfo);
 
-    GError* err;
+    GError* err = nullptr;
     g_app_info_set_as_default_for_type(gAppInfo, mimeType.c_str(), &err);
 
     if (err != nullptr) {
diff --git a/src/lib/appinfo.h b/src/lib/appinfo.h
index d33a5c3..a4772d8 100644
--- a/src/lib/appinfo.h
+++ b/src/lib/appinfo.h
@@ -16,7 +16,7 @@ public:
     static std::shared_ptr<AppInfoManger> loadByDesktopId(std::string desktopId);
     static std::string getDefaultApp(std::string mimeType, bool supportUri);
     static std::vector<std::string> getAppList(std::string mimeType);
-    static bool getDefaultApp(std::string mimeType, std::string desktopId);
+    static bool setDefaultApp(std::string mimeType, std::string desktopId);
     static std::vector<std::string>& getXdgDataDirs();
     static std::vector<std::string>& getXdgAppsDirs();
     static std::vector<std::shared_ptr<AppInfoManger>> getAll(std::map<std::string, std::vector<std::string>> skipDirs);
diff --git a/src/modules/mimeapp/mime_app.cpp b/src/modules/mimeapp/mime_app.cpp
index ea8c3c8..4b47fcb 100644
--- a/src/modules/mimeapp/mime_app.cpp
+++ b/src/modules/mimeapp/mime_app.cpp
@@ -291,7 +291,7 @@ bool MimeApp::setDefaultApp(const std::string &mimeType, const  std::string &des
         return true;
     }
 
-    return  AppInfoManger::getDefaultApp(mimeType, desktopId);
+    return  AppInfoManger::setDefaultApp(mimeType, desktopId);
 }
 
 void MimeApp::DeleteApp(QStringList mimeTypes, const QString &desktopId)
@@ -415,7 +415,7 @@ void MimeApp::SetDefaultApp(const QStringList &mimeTypes, const QString &desktop
         if (mime.toStdString().compare(AppinfoCommon::AppMimeTerminal) == 0) {
             bSuccess = TerminalInfo::getInstanceTerminal().setDefaultTerminal(desktopId.toStdString());
         } else {
-            bSuccess = AppInfoManger::getDefaultApp(mime.toStdString(), desktopId.toStdString());
+            bSuccess = AppInfoManger::setDefaultApp(mime.toStdString(), desktopId.toStdString());
         }
 
         if (!bSuccess) {