diff --git a/units/src/amount/signed.rs b/units/src/amount/signed.rs
index 7070adf77..8b152c2df 100644
--- a/units/src/amount/signed.rs
+++ b/units/src/amount/signed.rs
@@ -152,7 +152,7 @@ impl SignedAmount {
 
         match Self::from_sat(sats) {
             Ok(amount) => amount,
-            Err(_) => panic!("unreachable - 65536 BTC is within range"),
+            Err(_) => panic!("unreachable - 32,767 BTC is within range"),
         }
     }
 
diff --git a/units/src/amount/unsigned.rs b/units/src/amount/unsigned.rs
index 20bb6f82b..9504af2a0 100644
--- a/units/src/amount/unsigned.rs
+++ b/units/src/amount/unsigned.rs
@@ -152,7 +152,7 @@ impl Amount {
 
         match Self::from_sat(sats) {
             Ok(amount) => amount,
-            Err(_) => panic!("unreachable - 65536 BTC is within range"),
+            Err(_) => panic!("unreachable - 65,535 BTC is within range"),
         }
     }