diff --git a/YACReader/YACReader.pro b/YACReader/YACReader.pro
index bca908bc..54c534a8 100644
--- a/YACReader/YACReader.pro
+++ b/YACReader/YACReader.pro
@@ -7,7 +7,6 @@ DEPENDPATH += . \
     release
 
 DEFINES += NOMINMAX YACREADER
-QMAKE_MAC_SDK = macosx10.12
 
 #load default build flags
 include (../config.pri)
diff --git a/YACReaderLibrary/YACReaderLibrary.pro b/YACReaderLibrary/YACReaderLibrary.pro
index 1dd27289..14513a18 100644
--- a/YACReaderLibrary/YACReaderLibrary.pro
+++ b/YACReaderLibrary/YACReaderLibrary.pro
@@ -13,7 +13,6 @@ INCLUDEPATH += . \
               ./comic_vine/model
 
 DEFINES += SERVER_RELEASE NOMINMAX YACREADER_LIBRARY
-QMAKE_MAC_SDK = macosx10.12
 
 # load default build flags
 include (../config.pri)
diff --git a/YACReaderLibraryServer/YACReaderLibraryServer.pro b/YACReaderLibraryServer/YACReaderLibraryServer.pro
index 18eb7055..b3cdbae9 100644
--- a/YACReaderLibraryServer/YACReaderLibraryServer.pro
+++ b/YACReaderLibraryServer/YACReaderLibraryServer.pro
@@ -11,7 +11,6 @@ INCLUDEPATH += ../YACReaderLibrary \
                 ../YACReaderLibrary/db
 
 DEFINES += SERVER_RELEASE NOMINMAX YACREADER_LIBRARY QT_NO_DEBUG_OUTPUT
-QMAKE_MAC_SDK = macosx10.12
 # load default build flags
 # do a basic dependency check
 include(headless_config.pri)