diff --git a/celldetection/util/util.py b/celldetection/util/util.py
index 407acf8..a261c12 100644
--- a/celldetection/util/util.py
+++ b/celldetection/util/util.py
@@ -483,6 +483,9 @@ def inject_extra_repr_(module, name, fn):
     Note:
         This is an inplace operation.
 
+    Notes:
+        - This op may impair pickling.
+
     Args:
         module: Module.
         name: Name of the injected function (only used to avoid duplicate injection).
@@ -506,7 +509,7 @@ def wrap_module_(module: nn.Module, class_or_tuple, wrapper, recursive=True, **k
         handle[k] = wrapper(handle[k], **kwargs)
 
 
-def spectral_norm_(module, class_or_tuple=nn.Conv2d, recursive=True, name='weight', **kwargs):
+def spectral_norm_(module, class_or_tuple=nn.Conv2d, recursive=True, name='weight', add_repr=False, **kwargs):
     """Spectral normalization.
 
     Applies spectral normalization to parameters of all occurrences of ``class_or_tuple`` in the given module.
@@ -522,6 +525,8 @@ def spectral_norm_(module, class_or_tuple=nn.Conv2d, recursive=True, name='weigh
         class_or_tuple: Class or tuple of classes whose parameters are to be normalized.
         recursive: Whether to search for modules recursively.
         name: Name of weight parameter.
+        add_repr: Whether to indicate use of spectral norm in a module's representation.
+            Note that this may impair pickling.
         **kwargs: Additional keyword arguments for ``torch.nn.utils.spectral_norm``.
     """
 
@@ -532,10 +537,11 @@ def extra_repr(self):
     for handle, k, mod in iter_submodules(module, class_or_tuple, recursive=recursive):
         if mod._parameters.get(name) is not None:
             handle[k] = nn.utils.spectral_norm(handle[k], name=name, **kwargs)
-            inject_extra_repr_(handle[k], 'spectral_norm', extra_repr)
+            if add_repr:
+                inject_extra_repr_(handle[k], 'spectral_norm', extra_repr)
 
 
-def weight_norm_(module, class_or_tuple=nn.Conv2d, recursive=True, name='weight', **kwargs):
+def weight_norm_(module, class_or_tuple=nn.Conv2d, recursive=True, name='weight', add_repr=False, **kwargs):
     """Weight normalization.
 
     Applies weight normalization to parameters of all occurrences of ``class_or_tuple`` in the given module.
@@ -551,6 +557,8 @@ def weight_norm_(module, class_or_tuple=nn.Conv2d, recursive=True, name='weight'
         class_or_tuple: Class or tuple of classes whose parameters are to be normalized.
         recursive: Whether to search for modules recursively.
         name: Name of weight parameter.
+        add_repr: Whether to indicate use of weight norm in a module's representation.
+            Note that this may impair pickling.
         **kwargs: Additional keyword arguments for ``torch.nn.utils.weight_norm``.
     """
 
@@ -561,7 +569,8 @@ def extra_repr(self):
     for handle, k, mod in iter_submodules(module, class_or_tuple, recursive=recursive):
         if mod._parameters.get(name) is not None:
             handle[k] = nn.utils.weight_norm(handle[k], name=name, **kwargs)
-            inject_extra_repr_(handle[k], 'weight_norm', extra_repr)
+            if add_repr:
+                inject_extra_repr_(handle[k], 'weight_norm', extra_repr)
 
 
 def get_device(module: Union[nn.Module, Tensor, torch.device]):