diff --git a/.changeset/lucky-bulldogs-juggle.md b/.changeset/lucky-bulldogs-juggle.md
new file mode 100644
index 0000000000..4ee2a54d00
--- /dev/null
+++ b/.changeset/lucky-bulldogs-juggle.md
@@ -0,0 +1,5 @@
+---
+"@medusajs/modules-sdk": patch
+---
+
+Allow MedusaApp load legacy modules
diff --git a/packages/modules-sdk/src/loaders/register-modules.ts b/packages/modules-sdk/src/loaders/register-modules.ts
index e4a46d4052..a1ba16711b 100644
--- a/packages/modules-sdk/src/loaders/register-modules.ts
+++ b/packages/modules-sdk/src/loaders/register-modules.ts
@@ -73,12 +73,6 @@ export const registerMedusaModule = (
     throw new Error(`Module: ${moduleKey} is not defined.`)
   }
 
-  if (modDefinition.isLegacy) {
-    throw new Error(
-      `Module: ${moduleKey} is a legacy module. Please use registerModules instead.`
-    )
-  }
-
   if (
     isObject(moduleDeclaration) &&
     moduleDeclaration?.scope === MODULE_SCOPE.EXTERNAL