diff --git a/crates/dojo-world/src/config/namespace_config.rs b/crates/dojo-world/src/config/namespace_config.rs
index 25c637496d..89a709f090 100644
--- a/crates/dojo-world/src/config/namespace_config.rs
+++ b/crates/dojo-world/src/config/namespace_config.rs
@@ -8,14 +8,21 @@ use serde::Deserialize;
 pub const NAMESPACE_CFG_PREFIX: &str = "nm|";
 pub const DEFAULT_NAMESPACE_CFG_KEY: &str = "namespace_default";
 pub const DOJO_MANIFESTS_DIR_CFG_KEY: &str = "dojo_manifests_dir";
+pub const DEFAULT_NAMESPACE: &str = "DEFAULT_NAMESPACE";
 
 /// Namespace configuration.
-#[derive(Debug, Clone, Default, Deserialize)]
+#[derive(Debug, Clone, Deserialize)]
 pub struct NamespaceConfig {
     pub default: String,
     pub mappings: Option<HashMap<String, String>>,
 }
 
+impl Default for NamespaceConfig {
+    fn default() -> Self {
+        NamespaceConfig { default: DEFAULT_NAMESPACE.to_string(), mappings: None }
+    }
+}
+
 impl NamespaceConfig {
     /// Creates a new namespace configuration with a default namespace.
     pub fn new(default: &str) -> Self {
diff --git a/spawn-and-move-db.tar.gz b/spawn-and-move-db.tar.gz
index 4c9f0b6a8b..a7f95e1b16 100644
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diff --git a/types-test-db.tar.gz b/types-test-db.tar.gz
index f028e8c022..5694495f0d 100644
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