diff --git a/internal/lsp/source/rename.go b/internal/lsp/source/rename.go
index 7048962..7164f81 100644
--- a/internal/lsp/source/rename.go
+++ b/internal/lsp/source/rename.go
@@ -78,6 +78,9 @@
 	// Check that the renaming of the identifier is ok.
 	for _, ref := range refs {
 		r.check(ref.obj)
+		if r.hadConflicts { // one error is enough.
+			break
+		}
 	}
 	if r.hadConflicts {
 		return nil, errors.Errorf(r.errors)