diff --git a/YACReaderLibrary/library_window.cpp b/YACReaderLibrary/library_window.cpp
index 1bff7c7a..c6ecda63 100644
--- a/YACReaderLibrary/library_window.cpp
+++ b/YACReaderLibrary/library_window.cpp
@@ -1039,27 +1039,23 @@ void LibraryWindow::openComic()
 	
 		//                 %1        %2      %3        NO-->%4          %5        %6        %7        %8         %9       %10
 		//Invoke YACReader comicPath comicId libraryId NO-->currentPage bookmark1 bookmark2 bookmark3 brightness contrast gamma
+        bool yacreaderFound = false;
 #ifdef Q_OS_MAC
         QString comicIdS = QString("%1").arg(comicId);
         QString libraryIdS = QString("%1").arg(libraryId);
         QString yacreaderPath = QDir::cleanPath(QCoreApplication::applicationDirPath()+"/../../../YACReader.app");
-        if(QFileInfo(yacreaderPath).exists())
+        if(yacreaderfound = QFileInfo(yacreaderPath).exists())
             QProcess::startDetached("open", QStringList() << "-n" << yacreaderPath << "--args" << path << comicIdS << libraryIdS ); /*<< page << bookmark1 << bookmark2 << bookmark3 << brightness << contrast << gamma*///,QStringList() << path);
-        else
-            QMessageBox::critical(this,tr("YACReader not found"),tr("YACReader not found, YACReader should be installed in the same folder as YACReaderLibrary."));
-#elif Q_OS_WIN
-																																  /* \"%4\" \"%5\" \"%6\" \"%7\" \"%8\" \"%9\" \"%10\" */
-        if(!QProcess::startDetached(QDir::cleanPath(QCoreApplication::applicationDirPath())+QString("/YACReader \"%1\" \"%2\" \"%3\"").arg(path).arg(comicId).arg(libraryId)/*.arg(page).arg(bookmark1).arg(bookmark2).arg(bookmark3).arg(brightness).arg(contrast).arg(gamma)*/,QStringList()))
-        {
-            QMessageBox::critical(this,tr("YACReader not found"),tr("YACReader not found, YACReader should be installed in the same folder as YACReaderLibrary."));
-        }
+
+#elif Q_OS_WIN																														  /* \"%4\" \"%5\" \"%6\" \"%7\" \"%8\" \"%9\" \"%10\" */
+        yacreaderFound = QProcess::startDetached(QDir::cleanPath(QCoreApplication::applicationDirPath())+QString("/YACReader \"%1\" \"%2\" \"%3\"").arg(path).arg(comicId).arg(libraryId)/*.arg(page).arg(bookmark1).arg(bookmark2).arg(bookmark3).arg(brightness).arg(contrast).arg(gamma)*/,QStringList());
 #else
         QStringList parameters = QStringList() << path << QString::number(comicId) << QString::number(libraryId);
-        if(!QProcess::startDetached(QDir::cleanPath(QCoreApplication::applicationDirPath())+QString("/YACReader"),parameters))
-        {
+        yacreaderFound = QProcess::startDetached(QDir::cleanPath(QCoreApplication::applicationDirPath())+QString("/YACReader"),parameters);
+#endif
+        if(!yacreaderFound)
             QMessageBox::critical(this,tr("YACReader not found"),tr("YACReader not found, YACReader should be installed in the same folder as YACReaderLibrary."));
-        }
-#endif        
+
 		setCurrentComicOpened();
 	}
 }