diff --git a/lib/error_tracker/integrations/oban.ex b/lib/error_tracker/integrations/oban.ex
index be637d5..0553ae2 100644
--- a/lib/error_tracker/integrations/oban.ex
+++ b/lib/error_tracker/integrations/oban.ex
@@ -12,6 +12,20 @@ defmodule ErrorTracker.Integrations.Oban do
   It works using Oban's Telemetry events, so you don't need to modify anything
   on your application.
 
+  > #### A note on errors grouping {: .warning}
+  >
+  > All errors reported using `:error` or `{:error, any()}` as the output of
+  > your `perform/2` worker function are going to be grouped together (one group
+  > of those of errors per worker).
+  >
+  > The reason of that behaviour is that those errors do not generate an exception,
+  > so no stack trace is detected and they are stored as happening in the same
+  > place.
+  >
+  > If you want errors of your workers to be grouped as you may expect on other
+  > integrations, you should raise exceptions to report errors instead of gracefully
+  > returning an error value.
+
   ### Default context
 
   By default we store some context for you on errors generated in an Oban
@@ -58,9 +72,14 @@ defmodule ErrorTracker.Integrations.Oban do
   end
 
   def handle_event([:oban, :job, :exception], _measurements, metadata, :no_config) do
-    %{reason: exception, stacktrace: stacktrace} = metadata
+    %{reason: exception, stacktrace: stacktrace, job: job} = metadata
     state = Map.get(metadata, :state, :failure)
 
+    stacktrace =
+      if stacktrace == [],
+        do: [{String.to_existing_atom("Elixir." <> job.worker), :perform, 2, []}],
+        else: stacktrace
+
     ErrorTracker.report(exception, stacktrace, %{state: state})
   end
 end
diff --git a/lib/error_tracker/schemas/error.ex b/lib/error_tracker/schemas/error.ex
index 2c4ab45..fbfb4b9 100644
--- a/lib/error_tracker/schemas/error.ex
+++ b/lib/error_tracker/schemas/error.ex
@@ -32,7 +32,7 @@ defmodule ErrorTracker.Error do
 
     {source_line, source_function} =
       if source do
-        source_line = if source.line, do: "#{source.file}:#{source.line}", else: "nofile"
+        source_line = if source.line, do: "#{source.file}:#{source.line}", else: "(nofile)"
         source_function = "#{source.module}.#{source.function}/#{source.arity}"
 
         {source_line, source_function}
diff --git a/lib/error_tracker/web/live/show.html.heex b/lib/error_tracker/web/live/show.html.heex
index 16ecb87..b14cda4 100644
--- a/lib/error_tracker/web/live/show.html.heex
+++ b/lib/error_tracker/web/live/show.html.heex
@@ -48,7 +48,7 @@
                 <td class="px-2 align-top"><pre>(<%= line.application || @app %>)</pre></td>
                 <td>
                   <pre><%= "#{sanitize_module(line.module)}.#{line.function}/#{line.arity}" %>
-                <%= if line.line, do: "#{line.file}:#{line.line}", else: "nofile" %></pre>
+                <%= if line.line, do: "#{line.file}:#{line.line}", else: "(nofile)" %></pre>
                 </td>
               </tr>
             </tbody>
diff --git a/test/error_tracker_test.exs b/test/error_tracker_test.exs
index f8018b3..8d9ea79 100644
--- a/test/error_tracker_test.exs
+++ b/test/error_tracker_test.exs
@@ -40,7 +40,7 @@ defmodule ErrorTrackerTest do
         assert error.source_line =~ @relative_file_path
       else
         assert error.source_function == "erlang.+/2"
-        assert error.source_line == "nofile"
+        assert error.source_line == "(nofile)"
       end
     end
 
@@ -54,7 +54,7 @@ defmodule ErrorTrackerTest do
       assert error.kind == to_string(UndefinedFunctionError)
       assert error.reason =~ "is undefined or private"
       assert error.source_function == Exception.format_mfa(m, f, Enum.count(a))
-      assert error.source_line == "nofile"
+      assert error.source_line == "(nofile)"
     end
 
     test "reports throws" do