diff --git a/src/main.cpp b/src/main.cpp
index a5667f0cb..7d3ad3f65 100755
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -69,7 +69,7 @@ int main(int argc, char *argv[]) {
   // TODO: dat '\n' do konstant
 
   // Check if another instance is running.
-  if (application.sendMessage((QStringList() << APP_IS_RUNNING << application.arguments().mid(1)).join('\n'))) {
+  if (application.sendMessage((QStringList() << APP_IS_RUNNING << application.arguments().mid(1)).join("\n"))) {
     qWarning("Another instance of the application is already running. Notifying it.");
     return EXIT_FAILURE;
   }