diff --git a/helix-lsp/src/lib.rs b/helix-lsp/src/lib.rs
index df57bbe8c..ba41cbc5a 100644
--- a/helix-lsp/src/lib.rs
+++ b/helix-lsp/src/lib.rs
@@ -1032,7 +1032,8 @@ mod tests {
 
         let mut source = Rope::from_str("[\n\"🇺🇸\",\n\"🎄\",\n]");
 
-        let transaction = generate_transaction_from_edits(&source, edits, OffsetEncoding::Utf8);
+        let transaction = generate_transaction_from_edits(&source, edits, OffsetEncoding::Utf16);
         assert!(transaction.apply(&mut source));
+        assert_eq!(source, "[\n  \"🇺🇸\",\n  \"🎄\",\n]");
     }
 }