diff --git a/lib/membrane/bin/callback_context.ex b/lib/membrane/bin/callback_context.ex
index 6f70672bf..1d929f601 100644
--- a/lib/membrane/bin/callback_context.ex
+++ b/lib/membrane/bin/callback_context.ex
@@ -27,7 +27,7 @@ defmodule Membrane.Bin.CallbackContext do
           optional(:pad_options) => map(),
           optional(:members) => [Membrane.Child.name()],
           optional(:crash_initiator) => Membrane.Child.name(),
-          optional(:reason) => Membrane.Core.Parent.CrashGroup.reason(),
+          optional(:reason) => any(),
           optional(:start_of_stream_received?) => boolean()
         }
 end
diff --git a/lib/membrane/core/parent/crash_group.ex b/lib/membrane/core/parent/crash_group.ex
index 5608ab9a4..7d90f91f5 100644
--- a/lib/membrane/core/parent/crash_group.ex
+++ b/lib/membrane/core/parent/crash_group.ex
@@ -10,7 +10,6 @@ defmodule Membrane.Core.Parent.CrashGroup do
   use Bunch.Access
 
   @type name() :: any()
-  @type reason() :: any()
 
   @type t :: %__MODULE__{
           name: name(),
@@ -18,7 +17,7 @@ defmodule Membrane.Core.Parent.CrashGroup do
           members: [Membrane.Child.name()],
           detonating?: boolean(),
           crash_initiator: Membrane.Child.name(),
-          reason: reason()
+          reason: any()
         }
 
   @enforce_keys [:name, :mode]
diff --git a/lib/membrane/pipeline/callback_context.ex b/lib/membrane/pipeline/callback_context.ex
index b9fc4efa9..2bc41c644 100644
--- a/lib/membrane/pipeline/callback_context.ex
+++ b/lib/membrane/pipeline/callback_context.ex
@@ -23,7 +23,7 @@ defmodule Membrane.Pipeline.CallbackContext do
           optional(:from) => [GenServer.from()],
           optional(:members) => [Membrane.Child.name()],
           optional(:crash_initiator) => Membrane.Child.name(),
-          optional(:reason) => Membrane.Core.Parent.CrashGroup.reason(),
+          optional(:reason) => any(),
           optional(:start_of_stream_received?) => boolean()
         }
 end