diff --git a/c_tools/mock/loaders/sdf_loader.cpp b/c_tools/mock/loaders/sdf_loader.cpp
index b716536..cab171d 100644
--- a/c_tools/mock/loaders/sdf_loader.cpp
+++ b/c_tools/mock/loaders/sdf_loader.cpp
@@ -190,7 +190,7 @@ public:
     if (load_flags & (NEED_POSITION | NEED_VELOCITY))
       rescaleParticles(d, d->Hubble*1e-5, one_kpc/one_Gyr);
 
-//    enforceBoxSize(d);
+    enforceBoxSize(d);
     applyTransformations(d);
     basicPreprocessing(d, preproc);