diff --git a/libraries/messages/src/lib.rs b/libraries/messages/src/lib.rs
index 58c11cf2..8b55dba2 100644
--- a/libraries/messages/src/lib.rs
+++ b/libraries/messages/src/lib.rs
@@ -24,7 +24,10 @@ pub mod sensor;
 pub mod sensor_status;
 pub mod state;
 
-pub const MAX_SIZE: usize = 64;
+pub const MAX_HEALTH_SIZE: usize = 47;
+pub const MAX_SENSOR_SIZE: usize = 53;
+pub const MAX_STATE_SIZE: usize = 13;
+pub const MAX_LOGNCOMMAND_SIZE: usize = 15;
 
 pub use logging::{ErrorContext, Event, Log, LogLevel};
 
@@ -70,7 +73,7 @@ impl Message {
 
 #[cfg(test)]
 mod test {
-    use crate::Message;
+    use crate::{Message, MAX_HEALTH_SIZE, MAX_LOGNCOMMAND_SIZE, MAX_SENSOR_SIZE, MAX_STATE_SIZE};
     use proptest::prelude::*;
 
     proptest! {
@@ -82,19 +85,19 @@ mod test {
             // The size of the message should be less than or equal the maximum size.
             match msg.data {
                 crate::Data::State(_) => {
-                    assert!(dbg!(bytes.len()) <= 13);
+                    assert!(dbg!(bytes.len()) <= MAX_STATE_SIZE);
                 }
                 crate::Data::Sensor(_) => {
-                    assert!(dbg!(bytes.len()) <= 53);
+                    assert!(dbg!(bytes.len()) <= MAX_SENSOR_SIZE);
                 }
                 crate::Data::Log(_) => {
-                    assert!(dbg!(bytes.len()) <= 15);
+                    assert!(dbg!(bytes.len()) <= MAX_LOGNCOMMAND_SIZE);
                 }
                 crate::Data::Command(_) => {
-                    assert!(dbg!(bytes.len()) <= 15);
+                    assert!(dbg!(bytes.len()) <= MAX_LOGNCOMMAND_SIZE);
                 }
                 crate::Data::Health(_) => {
-                    assert!(dbg!(bytes.len()) <= 47);
+                    assert!(dbg!(bytes.len()) <= MAX_HEALTH_SIZE);
                 }
             }
         }