diff --git a/lib/pleroma/web/admin_api/config.ex b/lib/pleroma/web/admin_api/config.ex
index b7072f050..ddcfc87d5 100644
--- a/lib/pleroma/web/admin_api/config.ex
+++ b/lib/pleroma/web/admin_api/config.ex
@@ -77,8 +77,15 @@ defp do_convert(values) when is_list(values), do: for(val <- values, do: do_conv
   defp do_convert({k, v} = value) when is_tuple(value),
     do: %{k => do_convert(v)}
 
-  defp do_convert(value) when is_binary(value) or is_atom(value) or is_map(value),
-    do: value
+  defp do_convert(value) when is_binary(value) or is_map(value) or is_number(value), do: value
+
+  defp do_convert(value) when is_atom(value) do
+    string = to_string(value)
+
+    if String.starts_with?(string, "Elixir."),
+      do: String.trim_leading(string, "Elixir."),
+      else: value
+  end
 
   @spec transform(any()) :: binary()
   def transform(entity) when is_map(entity) do
diff --git a/test/web/admin_api/admin_api_controller_test.exs b/test/web/admin_api/admin_api_controller_test.exs
index 2a5912645..17a872b21 100644
--- a/test/web/admin_api/admin_api_controller_test.exs
+++ b/test/web/admin_api/admin_api_controller_test.exs
@@ -1463,5 +1463,34 @@ test "update config setting & delete", %{conn: conn} do
       assert Application.get_env(:pleroma, :keyaa1) == "another_value"
       refute Application.get_env(:pleroma, :keyaa2)
     end
+
+    test "common config example", %{conn: conn} do
+      conn =
+        post(conn, "/api/pleroma/admin/config", %{
+          configs: [
+            %{
+              "key" => "Pleroma.Captcha",
+              "value" => %{
+                "enabled" => ":false",
+                "method" => "Pleroma.Captcha.Kocaptcha",
+                "seconds_valid" => "i:60"
+              }
+            }
+          ]
+        })
+
+      assert json_response(conn, 200) == %{
+               "configs" => [
+                 %{
+                   "key" => "Pleroma.Captcha",
+                   "value" => [
+                     %{"enabled" => false},
+                     %{"method" => "Pleroma.Captcha.Kocaptcha"},
+                     %{"seconds_valid" => 60}
+                   ]
+                 }
+               ]
+             }
+    end
   end
 end