diff --git a/src/zm_event.cpp b/src/zm_event.cpp
index 89973d1e4..c52fdebcd 100644
--- a/src/zm_event.cpp
+++ b/src/zm_event.cpp
@@ -715,7 +715,7 @@ bool EventStream::loadInitialEventData( int monitor_id, time_t event_time )
     return( true );
 }
 
-bool EventStream::loadInitialEventData( int init_event_id, int init_frame_id )
+bool EventStream::loadInitialEventData( int init_event_id, unsigned int init_frame_id )
 {
     loadEventData( init_event_id );
 
diff --git a/src/zm_event.h b/src/zm_event.h
index f50a5bf06..f4a87e558 100644
--- a/src/zm_event.h
+++ b/src/zm_event.h
@@ -230,7 +230,7 @@ protected:
 
 protected:
     bool loadEventData( int event_id );
-    bool loadInitialEventData( int init_event_id, int init_frame_id );
+    bool loadInitialEventData( int init_event_id, unsigned int init_frame_id );
     bool loadInitialEventData( int monitor_id, time_t event_time );
 
     void checkEventLoaded();
@@ -249,7 +249,7 @@ public:
 
         event_data = 0;
     }
-	void setStreamStart( int init_event_id, int init_frame_id=0 )
+	void setStreamStart( int init_event_id, unsigned int init_frame_id=0 )
     {
         loadInitialEventData( init_event_id, init_frame_id );
         loadMonitor( event_data->monitor_id );
diff --git a/src/zms.cpp b/src/zms.cpp
index 9a7fcc941..f80c4f9db 100644
--- a/src/zms.cpp
+++ b/src/zms.cpp
@@ -62,7 +62,7 @@ int main( int argc, const char *argv[] )
 	int monitor_id = 0;
 	time_t event_time = 0;
 	int event_id = 0;
-	int frame_id = 1;
+	unsigned int frame_id = 1;
 	unsigned int scale = 100;
 	unsigned int rate = 100;
 	double maxfps = 10.0;