diff --git a/server/runtime_javascript_nakama.go b/server/runtime_javascript_nakama.go
index 233ae271b1b7977069db693aceda375ffe91e5ab..fae4afa759fb2d8c11da7afd5fa65f0fc0bfa2a1 100644
--- a/server/runtime_javascript_nakama.go
+++ b/server/runtime_javascript_nakama.go
@@ -4498,7 +4498,7 @@ func jsArrayToStorageOpWrites(r *goja.Runtime, dataSlice []any) (StorageOpWrites
 		}
 		writeOp.Value = string(valueBytes)
 
-		if versionIn, ok := dataMap["version"]; ok {
+		if versionIn := dataMap["version"]; versionIn != nil {
 			version, ok := versionIn.(string)
 			if !ok {
 				return nil, errors.New("expects 'version' value to be a string")