diff --git a/README.md b/README.md
index b6bbc7e..f86d065 100644
--- a/README.md
+++ b/README.md
@@ -63,7 +63,7 @@ or
 roslaunch msckf_vio msckf_vio_fla.launch
 ```
 
-Once the nodes are running you need to run the dataset rosbags, for example:
+Once the nodes are running you need to run the dataset rosbags (on a different terminal), for example:
 
 ```
 rosbag play V1_01_easy.bag