diff --git a/sio/arrowio/writer.go b/sio/arrowio/writer.go
index ed0017a54..baa01e9d7 100644
--- a/sio/arrowio/writer.go
+++ b/sio/arrowio/writer.go
@@ -5,7 +5,6 @@ import (
        "errors"
        "fmt"
        "io"
-       "maps"
        "math"
        "slices"
        "strconv"
@@ -533,10 +532,12 @@ func isRecursive(typ super.Type, seen map[string]struct{}) bool {
                        return true
                }
                seen[typ.Name] = struct{}{}
-               return isRecursive(typ.Type, seen)
+               is := isRecursive(typ.Type, seen)
+               delete(seen, typ.Name)
+               return is
        case *super.TypeRecord:
                for _, f := range typ.Fields {
-                       if isRecursive(f.Type, maps.Clone(seen)) {
+                       if isRecursive(f.Type, seen) {
                                return true
                        }
                }
@@ -545,7 +546,7 @@ func isRecursive(typ super.Type, seen map[string]struct{}) bool {
        case *super.TypeSet:
                return isRecursive(typ.Type, seen)
        case *super.TypeMap:
-               return isRecursive(typ.KeyType, maps.Clone(seen)) || isRecursive(typ.ValType, maps.Clone(seen))
+               return isRecursive(typ.KeyType, seen) || isRecursive(typ.ValType, seen)
        case *super.TypeUnion:
                for _, t := range typ.Types {
                        if isRecursive(t, seen) {