diff --git a/src/zm_event.cpp b/src/zm_event.cpp
index 802f392a7..77fe72b2c 100644
--- a/src/zm_event.cpp
+++ b/src/zm_event.cpp
@@ -264,7 +264,7 @@ void Event::AddFrame( struct timeval timestamp, const Image *image, const Image
 	}
 }
 
-void Event::StreamEvent( const char *path, int event_id, unsigned long refresh, FILE *fd )
+void Event::StreamEvent( const char *path, int event_id, long refresh, FILE *fd )
 {
 	static char sql[256];
 	sprintf( sql, "select Id, EventId, ImagePath, Delta from Frames where EventId = %d order by Id", event_id );
diff --git a/src/zm_event.h b/src/zm_event.h
index e0f3278a9..1722404ad 100644
--- a/src/zm_event.h
+++ b/src/zm_event.h
@@ -79,7 +79,7 @@ public:
 	void AddFrames( int n_frames, struct timeval **timestamps, const Image **images );
 	void AddFrame( struct timeval timestamp, const Image *image, const Image *alarm_frame=NULL, unsigned int score=0 );
 
-	static void StreamEvent( const char *path, int event_id, unsigned long refresh=-1, FILE *fd=stdout );
+	static void StreamEvent( const char *path, int event_id, long refresh=0, FILE *fd=stdout );
 };
 
 #endif // ZM_EVENT_H