diff --git a/node/gum/src/tests.rs b/node/gum/src/tests.rs
index 4b52147f2948..c4077c7615c7 100644
--- a/node/gum/src/tests.rs
+++ b/node/gum/src/tests.rs
@@ -32,7 +32,7 @@ fn plain() {
 fn wo_alias() {
 	let a: i32 = 7;
 	error!(target: "foo",
-		"Something something {}, {:?}, or maybe {}",
+		"Something something {}, {b:?}, or maybe {c}",
 		a,
 		b = Y::default(),
 		c = a