diff --git a/YACReaderLibrary/YACReaderLibrary.pro b/YACReaderLibrary/YACReaderLibrary.pro
index d0f0f0d3..a3b20ab4 100644
--- a/YACReaderLibrary/YACReaderLibrary.pro
+++ b/YACReaderLibrary/YACReaderLibrary.pro
@@ -14,6 +14,8 @@ INCLUDEPATH += . \
 
 DEFINES += SERVER_RELEASE NOMINMAX YACREADER_LIBRARY
 
+CONFIG += c++11
+
 # load default build flags
 include (../config.pri)
 include (../dependencies/pdf_backend.pri)