diff --git a/src/parse/session.rs b/src/parse/session.rs
index 624fed0d2de..7fc3778376c 100644
--- a/src/parse/session.rs
+++ b/src/parse/session.rs
@@ -315,7 +315,7 @@ fn build_diagnostic(level: DiagnosticLevel, span: Option<MultiSpan>) -> Diagnost
                 code: None,
                 message: vec![],
                 children: vec![],
-                suggestions: vec![],
+                suggestions: Ok(vec![]),
                 span: span.unwrap_or_else(MultiSpan::new),
                 sort_span: DUMMY_SP,
                 is_lint: false,