diff --git a/lib/oban/config.ex b/lib/oban/config.ex
index c572638e..2284c8a9 100644
--- a/lib/oban/config.ex
+++ b/lib/oban/config.ex
@@ -164,9 +164,10 @@ defmodule Oban.Config do
   end
 
   defp inline_testing?(pid, default) do
-    {:dictionary, dictionary} = Process.info(pid, :dictionary)
-
-    Keyword.get(dictionary, :oban_testing, default) == :inline
+    case Process.info(pid, :dictionary) do
+      {:dictionary, dictionary} -> Keyword.get(dictionary, :oban_testing, default) == :inline
+      _ -> false
+    end
   end
 
   @doc false