diff --git a/YACReader/YACReader.pro b/YACReader/YACReader.pro
index 6c0b418e..95063008 100644
--- a/YACReader/YACReader.pro
+++ b/YACReader/YACReader.pro
@@ -7,7 +7,7 @@ DEPENDPATH += . \
     release
 
 DEFINES += NOMINMAX YACREADER
-
+QMAKE_MAC_SDK = macosx10.11
 #load default build flags
 include (../config.pri)
 
diff --git a/YACReaderLibrary/YACReaderLibrary.pro b/YACReaderLibrary/YACReaderLibrary.pro
index 2b707b90..917babd7 100644
--- a/YACReaderLibrary/YACReaderLibrary.pro
+++ b/YACReaderLibrary/YACReaderLibrary.pro
@@ -14,7 +14,7 @@ INCLUDEPATH += ../common \
 			   ./comic_vine/model
 
 DEFINES += SERVER_RELEASE NOMINMAX YACREADER_LIBRARY
-
+QMAKE_MAC_SDK = macosx10.11
 #load default build flags
 include (../config.pri)