diff --git a/msg/BagRecording.msg b/msg/BagRecording.msg
index 77455a2..f352ba9 100644
--- a/msg/BagRecording.msg
+++ b/msg/BagRecording.msg
@@ -1,3 +1,3 @@
 string bag_name
-uint8 size_mb
+uint64 size_bytes
 string[] files
diff --git a/msg/BagRecordingStatus.msg b/msg/BagRecordingStatus.msg
index 02b43a1..1ccdf31 100644
--- a/msg/BagRecordingStatus.msg
+++ b/msg/BagRecordingStatus.msg
@@ -2,6 +2,6 @@ bool is_recording
 # Name of the currently recording bag file (empty if not recording)
 string bag_name
 # Time elapsed since the start of current recording in seconds (0 if not recording)
-uint16 time_elapsed
+uint32 time_elapsed
 string recorded_topics
-uint16 planned_duration
+uint32 planned_duration
diff --git a/srv/StartBagRecording.srv b/srv/StartBagRecording.srv
index 9a10516..119a7b9 100644
--- a/srv/StartBagRecording.srv
+++ b/srv/StartBagRecording.srv
@@ -10,7 +10,7 @@ string topic_profile
 
 # Record for pre-set time duration in seconds (optional)
 # Default 0: record until manually stopped or max time limit reached
-uint8 record_duration
+uint32 record_duration
 
 ---
 ## Response