diff --git a/src/adapters/methods/adapter_layer_base.py b/src/adapters/methods/adapter_layer_base.py
index 7a70a4d764..24069586a4 100644
--- a/src/adapters/methods/adapter_layer_base.py
+++ b/src/adapters/methods/adapter_layer_base.py
@@ -117,6 +117,9 @@ class ComposableAdapterLayerBase(AdapterLayerBase):
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
+        self._init_mapping()
+
+    def _init_mapping(self):
         self.composition_to_func_map = {
             Stack: self.compose_stack,
             Fuse: self.compose_fuse,
diff --git a/src/adapters/methods/bottleneck.py b/src/adapters/methods/bottleneck.py
index b802e960e2..7ec097d806 100644
--- a/src/adapters/methods/bottleneck.py
+++ b/src/adapters/methods/bottleneck.py
@@ -48,6 +48,7 @@ def __init__(self, location_key: str):
         self.location_key = location_key
 
     def init_adapters(self, model_config, adapters_config):
+        self._init_mapping()
         self.model_config = model_config
         self.adapters_config = adapters_config
         self.adapters = nn.ModuleDict(dict())