diff --git a/app/src/lib/utilities/index.ts b/app/src/lib/utilities/index.ts
index 706b9aa..76ebe42 100644
--- a/app/src/lib/utilities/index.ts
+++ b/app/src/lib/utilities/index.ts
@@ -2,3 +2,5 @@ export * from './result'
 export * from './string-utilities'
 export * from './svelte-utilities'
 export * from './math-utilities'
+export * from './buffer-utilities'
+export * from './model-utilities'
\ No newline at end of file
diff --git a/app/src/lib/modelLoader.ts b/app/src/lib/utilities/model-utilities.ts
similarity index 93%
rename from app/src/lib/modelLoader.ts
rename to app/src/lib/utilities/model-utilities.ts
index e892ef3..332dfc5 100644
--- a/app/src/lib/modelLoader.ts
+++ b/app/src/lib/utilities/model-utilities.ts
@@ -19,7 +19,7 @@ export const loadModelAsync = async (url:string):Promise<[URDFRobot, string[]]>
         model.updateMatrixWorld(true);
         model.scale.setScalar(10);
         const joints = Object.entries(model.joints)
-            .filter(joint => joint[1]._jointType !== 'fixed')
+            .filter(joint => joint[1].jointType !== 'fixed')
             .map(joint => joint[0])
 
         resolve([model, joints]);