diff --git a/mkspecs/macx-xcode/default.xcscheme b/mkspecs/macx-xcode/default.xcscheme
index 6beb0d82804..bda2b8c1c08 100644
--- a/mkspecs/macx-xcode/default.xcscheme
+++ b/mkspecs/macx-xcode/default.xcscheme
@@ -62,6 +62,7 @@
       useCustomWorkingDirectory = "NO"
       buildConfiguration = "Debug"
       ignoresPersistentStateOnLaunch = "NO"
+      disableMainThreadChecker = "YES"
       debugDocumentVersioning = "NO"
       allowLocationSimulation = "YES">
       <BuildableProductRunnable>