diff --git a/src/util.rs b/src/util.rs
index cb32884..c59a254 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -172,7 +172,7 @@ where
 			while let Some((key, value)) = access.next_entry()? {
 				if map.contains_key(&key) {
 					return Err(serde::de::Error::custom(format!(
-						"duplicate key `{key}` at line"
+						"duplicate key `{key}`"
 					)));
 				}