--- a/SASM.pro	2018-10-08 22:09:33.000000000 +0300
+++ b/SASM.pro	2019-08-17 10:39:31.695020549 +0300
@@ -18,6 +18,8 @@
 BINDIR = $$PREFIX/bin
 DATADIR = $$PREFIX/share
 
+CONFIG += qtsingleapplication
+
 bsd {
     binfile.files += sasm
     binfile.files += BSD/bin/*
@@ -47,7 +49,6 @@
 INSTALLS += shortcutfiles
 INSTALLS += docfiles
 
-include(singleapplication/qtsingleapplication.pri)
 
 SOURCES += main.cpp\
         mainwindow.cpp \