diff --git a/mainwindow.cpp b/mainwindow.cpp
index 3452e42..60a7eb6 100755
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -25,8 +25,8 @@ char MainWindow::loadPlugIn(char lade1_entlade2)
     //pluginLoader->setFileName("../SlavePlug/libCAslave.so");  // for ptu5
     //pluginLoader->setFileName("../../MasterPlug/CAmaster.dll"); // for windows
 
-    pluginLoader->setFileName("../../SlavePlug/CAslave.dll"); // for windows
-//    pluginLoader->setFileName("/usr/lib/libCAslave.so"); // for PTU5
+//    pluginLoader->setFileName("../../SlavePlug/CAslave.dll"); // for windows
+    pluginLoader->setFileName("/usr/lib/libCAslave.so"); // for PTU5
 
     if (lade1_entlade2==2)
     {