diff --git a/src/main.cpp b/src/main.cpp
index 57636ad..a20ca67 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -3,6 +3,8 @@
 #include <QApplication>
 #include <QCommandLineParser>
 #include <QDebug>
+#include <QLockFile>
+#include <QDir>
 #include <QScreen>
 #include <QtGlobal>
 #include <formatter.hpp>
@@ -80,6 +82,11 @@ int main(int argc, char *argv[]) {
     a.setApplicationName("KShare");
     a.setOrganizationName("ArsenArsen");
     a.setApplicationVersion("4.1");
+        
+    QLockFile lockFile(QDir::temp().absoluteFilePath("com.arsenarsen.kshare.lock"));
+    if(!lockFile.tryLock(100)){
+        return 1;
+    }
 
     QString locale = QLocale::system().name();
     if (locale != "en_US") loadTranslation(locale);