diff --git a/src/frameworks/CoreServices/include/CoreServices/CoreServices.h b/src/frameworks/CoreServices/include/CoreServices/CoreServices.h
index 16b22df09..823659314 100644
--- a/src/frameworks/CoreServices/include/CoreServices/CoreServices.h
+++ b/src/frameworks/CoreServices/include/CoreServices/CoreServices.h
@@ -26,6 +26,7 @@
 
 #include <LaunchServices/LaunchServices.h>
 #include <AE/AE.h>
+#include <FSEvents/FSEvents.h>
 
 #endif
 
diff --git a/src/frameworks/CoreServices/include/FSEvents/FSEvents.h b/src/frameworks/CoreServices/include/FSEvents/FSEvents.h
index 5e6151ea6..8dcb6aaaf 100644
--- a/src/frameworks/CoreServices/include/FSEvents/FSEvents.h
+++ b/src/frameworks/CoreServices/include/FSEvents/FSEvents.h
@@ -67,6 +67,10 @@ enum {
 	kFSEventStreamCreateFlagUseExtendedData = 0x40,
 };
 
+enum {
+	kFSEventStreamEventIdSinceNow = 0xFFFFFFFFFFFFFFFFULL,
+};
+
 #define kFSEventStreamEventExtendedDataPathKey      CFSTR("path")
 #define kFSEventStreamEventExtendedFileIDKey        CFSTR("fileID")