diff --git a/internal/lsp/source/options.go b/internal/lsp/source/options.go
index 363dcc5..393880e 100644
--- a/internal/lsp/source/options.go
+++ b/internal/lsp/source/options.go
@@ -584,7 +584,7 @@
 			Analyzer:       fillreturns.Analyzer,
 			enabled:        true,
 			FixesError:     fillreturns.FixesError,
-			HighConfidence: true,
+			HighConfidence: false,
 		},
 		nonewvars.Analyzer.Name: {
 			Analyzer:   nonewvars.Analyzer,