diff --git a/CMakeLists.txt b/CMakeLists.txt
index a4bf351b..459eeb04 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -95,7 +95,7 @@ endif()
 
 if (enable-tray)
 	if (DBUS_FOUND)
-		set(ENABLE_TRAY)
+		set(ENABLE_TRAY TRUE)
 		add_definitions(-DENABLE_TRAY)
 	else()
 		message(WARNING "Tray required but DBus was not found. Tray will not be included")
diff --git a/swaybar/CMakeLists.txt b/swaybar/CMakeLists.txt
index 373719de..48ededdd 100644
--- a/swaybar/CMakeLists.txt
+++ b/swaybar/CMakeLists.txt
@@ -7,7 +7,7 @@ include_directories(
 	${XKBCOMMON_INCLUDE_DIRS}
 	${DBUS_INCLUDE_DIRS}
 )
-if (enable-tray)
+if (ENABLE_TRAY)
 	file(GLOB tray
 		tray/*.c
 	)