diff --git a/libpaket/src/utils.rs b/libpaket/src/utils.rs
index 1b4a335..b92c3d0 100644
--- a/libpaket/src/utils.rs
+++ b/libpaket/src/utils.rs
@@ -69,7 +69,10 @@ macro_rules! mini_assert_api {
 macro_rules! mini_assert_inval {
     ($a: expr) => {
         if !$a {
-            return Err(crate::LibraryError::InvalidArgument(format!("MiniAssert failed: $a")));
+            return Err(crate::LibraryError::InvalidArgument(format!(
+                "MiniAssert failed: $a"
+            )));
         }
-    } 
-}
\ No newline at end of file
+    };
+}
+