diff --git a/internal/imports/imports.go b/internal/imports/imports.go
index 7c08eed660..2e7a317e55 100644
--- a/internal/imports/imports.go
+++ b/internal/imports/imports.go
@@ -119,7 +119,7 @@ func ApplyFixes(fixes []*ImportFix, filename string, src []byte, opt *Options, e
 // GetAllCandidates gets all of the packages starting with prefix that can be
 // imported by filename, sorted by import path.
 func GetAllCandidates(ctx context.Context, callback func(ImportFix), searchPrefix, filename, filePkg string, opt *Options) error {
-	_, opt, err := initialize(filename, nil, opt)
+	_, opt, err := initialize(filename, []byte{}, opt)
 	if err != nil {
 		return err
 	}
@@ -128,7 +128,7 @@ func GetAllCandidates(ctx context.Context, callback func(ImportFix), searchPrefi
 
 // GetPackageExports returns all known packages with name pkg and their exports.
 func GetPackageExports(ctx context.Context, callback func(PackageExport), searchPkg, filename, filePkg string, opt *Options) error {
-	_, opt, err := initialize(filename, nil, opt)
+	_, opt, err := initialize(filename, []byte{}, opt)
 	if err != nil {
 		return err
 	}