diff --git a/units/src/amount/unsigned.rs b/units/src/amount/unsigned.rs
index f638a1e13..46738bbd7 100644
--- a/units/src/amount/unsigned.rs
+++ b/units/src/amount/unsigned.rs
@@ -264,14 +264,6 @@ impl Amount {
     }
 }
 
-#[cfg(feature = "arbitrary")]
-impl<'a> Arbitrary<'a> for Amount {
-    fn arbitrary(u: &mut Unstructured<'a>) -> arbitrary::Result<Self> {
-        let a = u64::arbitrary(u)?;
-        Ok(Amount(a))
-    }
-}
-
 impl default::Default for Amount {
     fn default() -> Self { Amount::ZERO }
 }
@@ -387,3 +379,11 @@ impl core::iter::Sum for Amount {
         Amount::from_sat(sats)
     }
 }
+
+#[cfg(feature = "arbitrary")]
+impl<'a> Arbitrary<'a> for Amount {
+    fn arbitrary(u: &mut Unstructured<'a>) -> arbitrary::Result<Self> {
+        let a = u64::arbitrary(u)?;
+        Ok(Amount(a))
+    }
+}