diff --git a/lib/pry/commands/show_doc.rb b/lib/pry/commands/show_doc.rb
index c0f183b22..3742348a5 100644
--- a/lib/pry/commands/show_doc.rb
+++ b/lib/pry/commands/show_doc.rb
@@ -89,6 +89,5 @@ def start_line_for(code_object)
     end
 
     Pry::Commands.add_command(Pry::Command::ShowDoc)
-    Pry::Commands.alias_command '?', 'show-doc'
   end
 end
diff --git a/lib/pry/commands/show_source.rb b/lib/pry/commands/show_source.rb
index 7df865c6c..1a0203490 100644
--- a/lib/pry/commands/show_source.rb
+++ b/lib/pry/commands/show_source.rb
@@ -113,5 +113,6 @@ def start_line_for(code_object)
     Pry::Commands.add_command(Pry::Command::ShowSource)
     Pry::Commands.alias_command 'show-method', 'show-source'
     Pry::Commands.alias_command '$', 'show-source'
+    Pry::Commands.alias_command '?', 'show-source -d'
   end
 end