--- a/avidemux/qt4/ADM_userInterfaces/translator.cpp
+++ b/avidemux/qt4/ADM_userInterfaces/translator.cpp
@@ -4,6 +4,8 @@
 #include <QtCore/QTranslator>
 #include <QApplication>
 #include <QtCore/QString>
+#include <QtCore/QDir>
+#include <QtCore/QLibraryInfo>
 #include "ADM_default.h"
 #include "ADM_inttype.h"
 #include "ADM_files.h"
@@ -101,9 +103,9 @@ void loadTranslator(void)
     qtTranslator=new QTranslator();
     avidemuxTranslator=new QTranslator();
 #if QT_VERSION < QT_VERSION_CHECK(5,0,0)
-    nbLoaded+=loadTranslation(qtTranslator, appdir + "qt_" + languageFile);
+    nbLoaded+=loadTranslation(qtTranslator, QLibraryInfo::location(QLibraryInfo::TranslationsPath) + QDir::separator() + "qt_" + languageFile);
 #else
-    nbLoaded+=loadTranslation(qtTranslator, appdir + "qtbase_" + languageFile);
+    nbLoaded+=loadTranslation(qtTranslator, QLibraryInfo::location(QLibraryInfo::TranslationsPath) + QDir::separator() + "qtbase_" + languageFile);
 #endif
     nbLoaded+=loadTranslation(avidemuxTranslator, appdir + "avidemux_" + languageFile);
     translatorLoaded = true;