diff --git a/frontend b/frontend
index d0e5963..441fd70 160000
--- a/frontend
+++ b/frontend
@@ -1 +1 @@
-Subproject commit d0e59630d6e0beb1c22d2f242f556464a5056c1f
+Subproject commit 441fd708dbed89c59bf72a742431a78ff2f02bc3
diff --git a/src/error/builder.go b/src/error/builder.go
index 38a1bf2..16d2816 100644
--- a/src/error/builder.go
+++ b/src/error/builder.go
@@ -60,10 +60,12 @@ func (b Builder) Build() NestedError {
 }
 
 func (b Builder) To(ptr *NestedError) {
-	if *ptr == nil {
+	if ptr == nil {
+		return
+	} else if *ptr == nil {
 		*ptr = b.Build()
 	} else {
-		**ptr = *b.Build()
+		(*ptr).With(b.Build())
 	}
 }