diff --git a/src/qt/CMakeLists.txt b/src/qt/CMakeLists.txt
--- a/src/qt/CMakeLists.txt
+++ b/src/qt/CMakeLists.txt
@@ -126,6 +126,10 @@
 	${Protobuf_LIBRARIES}
 )
 
+if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+	set_property(TARGET bitcoin-qt-base PROPERTY AUTOMOC_MOC_OPTIONS "-DQ_OS_MAC")
+endif()
+
 # Wallet
 if(BUILD_BITCOIN_WALLET)
 	target_sources(bitcoin-qt-base