diff --git a/src/lib/platform/OSXScreen.mm b/src/lib/platform/OSXScreen.mm
index e6bc047c7..74ff819a6 100644
--- a/src/lib/platform/OSXScreen.mm
+++ b/src/lib/platform/OSXScreen.mm
@@ -54,10 +54,7 @@ enum
   kDeskflowMouseScrollAxisY = 'saxy'
 };
 
-enum
-{
-  kCarbonLoopWaitTimeout = 10
-};
+static const double kCarbonLoopWaitTimeout = 10.0;
 
 int getSecureInputEventPID();
 std::string getProcessName(int pid);