diff --git a/common/main/multi.h b/common/main/multi.h
index d7bb23ae1..3abd03641 100644
--- a/common/main/multi.h
+++ b/common/main/multi.h
@@ -337,6 +337,11 @@ void multi_disconnect_player(int pnum);
 void multi_object_to_object_rw(object *obj, object_rw *obj_rw);
 void multi_object_rw_to_object(object_rw *obj_rw, object *obj);
 
+#if defined(DXX_BUILD_DESCENT_I)
+static inline void multi_send_got_flag (char a) { (void)a; }
+#elif defined(DXX_BUILD_DESCENT_II)
+void multi_send_got_flag (char);
+#endif
 
 // Exported variables
 
diff --git a/d2x-rebirth/main/powerup.c b/d2x-rebirth/main/powerup.c
index 63a664dff..c2fe37580 100644
--- a/d2x-rebirth/main/powerup.c
+++ b/d2x-rebirth/main/powerup.c
@@ -219,7 +219,6 @@ int pick_up_vulcan_ammo(void)
 
 extern char GetKeyValue(char);
 extern void check_to_use_primary(int);
-extern void multi_send_got_flag (char);
 
 //	returns true if powerup consumed
 int do_powerup(object *obj)