diff --git a/apps/els_lsp/src/els_diagnostics.erl b/apps/els_lsp/src/els_diagnostics.erl
index 58bd3043f..d066a767e 100644
--- a/apps/els_lsp/src/els_diagnostics.erl
+++ b/apps/els_lsp/src/els_diagnostics.erl
@@ -45,7 +45,8 @@
 %%==============================================================================
 %% API
 %%==============================================================================
--export([ available_diagnostics/0
+-export([ init/0
+        , available_diagnostics/0
         , default_diagnostics/0
         , enabled_diagnostics/0
         , make_diagnostic/4
@@ -56,6 +57,15 @@
 %% API
 %%==============================================================================
 
+-spec init() -> ok.
+init() ->
+  case els_config:get(diagnostics) of
+    undefined ->
+      ok;
+    _ ->
+      init_diagnostics(enabled_diagnostics())
+  end.
+
 -spec available_diagnostics() -> [diagnostic_id()].
 available_diagnostics() ->
   [ <<"bound_var_in_pattern">>
@@ -118,7 +128,6 @@ run_diagnostic(Uri, Id) ->
                     els_diagnostics_provider:notify(Diagnostics, self())
                 end
             },
-  ok = init_diagnostic(CbModule),
   {ok, Pid} = els_background_job:new(Config),
   Pid.
 
@@ -150,11 +159,15 @@ valid(Ids0) ->
   end,
   Valid.
 
--spec init_diagnostic(atom()) -> ok.
-init_diagnostic(CbModule) ->
+-spec init_diagnostics(binary()) -> ok.
+init_diagnostics([]) ->
+  ok;
+init_diagnostics([Id|T]) ->
+  CbModule = cb_module(Id),
   case erlang:function_exported(CbModule, init, 0) of
     true ->
       CbModule:init();
     false ->
       ok
-  end.
+  end,
+  init_diagnostics(T).
diff --git a/apps/els_lsp/src/els_diagnostics_provider.erl b/apps/els_lsp/src/els_diagnostics_provider.erl
index 240d9556c..c185d5e90 100644
--- a/apps/els_lsp/src/els_diagnostics_provider.erl
+++ b/apps/els_lsp/src/els_diagnostics_provider.erl
@@ -42,6 +42,7 @@ options() ->
 
 -spec init() -> state().
 init() ->
+  ok = els_diagnostics:init(),
   #{ in_progress => [] }.
 
 %% LSP 3.15 introduce versioning for diagnostics. Until all clients
diff --git a/apps/els_lsp/test/els_diagnostics_SUITE.erl b/apps/els_lsp/test/els_diagnostics_SUITE.erl
index 2642fb926..e57b1b9d4 100644
--- a/apps/els_lsp/test/els_diagnostics_SUITE.erl
+++ b/apps/els_lsp/test/els_diagnostics_SUITE.erl
@@ -125,10 +125,23 @@ init_per_testcase(TestCase, Config) when TestCase =:= gradualizer ->
   els_mock_diagnostics:setup(),
   els_test_utils:init_per_testcase(TestCase, Config);
 init_per_testcase(TestCase, Config) when TestCase =:= sheldon ->
-  meck:new(els_sheldon_diagnostics, [passthrough, no_link]),
-  meck:expect(els_sheldon_diagnostics, is_default, 0, true),
-  els_mock_diagnostics:setup(),
-  els_test_utils:init_per_testcase(TestCase, Config);
+  case list_to_integer(erlang:system_info(otp_release)) >= 23 of
+    true ->
+      meck:new(els_sheldon_diagnostics, [passthrough, no_link]),
+      meck:expect(els_sheldon_diagnostics, is_default, 0, true),
+      els_mock_diagnostics:setup(),
+      meck:expect( els_diagnostics_provider
+                 , init
+                 , fun() ->
+                      DiagnosticsConfig = #{"enabled" => [<<"sheldon">>]},
+                      els_config:set(diagnostics, DiagnosticsConfig),
+                      meck:passthrough([])
+                   end
+                 ),
+      els_test_utils:init_per_testcase(TestCase, Config);
+    false ->
+      {skip, "Sheldon diagnostics should run on OTP23+"}
+  end;
 init_per_testcase(TestCase, Config) ->
   els_mock_diagnostics:setup(),
   els_test_utils:init_per_testcase(TestCase, Config).
@@ -667,38 +680,33 @@ gradualizer(_Config) ->
 
 -spec sheldon(config()) -> ok.
 sheldon(_Config) ->
-  case list_to_integer(erlang:system_info(otp_release)) >= 23 of
-    true ->
-      {ok, Cwd} = file:get_cwd(),
-      RootPath = els_test_utils:root_path(),
-      try
-          file:set_cwd(RootPath),
-          Path = src_path("diagnostics_sheldon.erl"),
-          Source = <<"Sheldon">>,
-          Errors = [],
-          Warnings = [ #{ code => spellcheck
-                        , message => <<"The word \"sheldon\" in "
-                                       "comment is unknown. "
-                                       "Maybe you wanted to use \"Sheldon\"?">>
-                        , range => {{2, 0}, {3, 0}}
-                        , relatedInformation => []
-                        }
-                     , #{ code => spellcheck
-                        , message => <<"The word \"somestrange\" in comment is "
-                                        "unknown.">>
-                        , range => {{0, 0}, {1, 0}}
-                        , relatedInformation => []
-                        }
-                     ],
-          Hints = [],
-          els_test:run_diagnostics_test(Path, Source, Errors, Warnings, Hints)
-      catch _Err ->
-          file:set_cwd(Cwd)
-      end,
-      ok;
-    false ->
-      {skipped, "Sheldon diagnostics should run on OTP23+"}
-  end.
+  {ok, Cwd} = file:get_cwd(),
+  RootPath = els_test_utils:root_path(),
+  try
+      file:set_cwd(RootPath),
+      Path = src_path("diagnostics_sheldon.erl"),
+      Source = <<"Sheldon">>,
+      Errors = [],
+      Warnings = [ #{ code => spellcheck
+                    , message => <<"The word \"sheldon\" in "
+                                   "comment is unknown. "
+                                   "Maybe you wanted to use \"Sheldon\"?">>
+                    , range => {{2, 0}, {3, 0}}
+                    , relatedInformation => []
+                    }
+                 , #{ code => spellcheck
+                    , message => <<"The word \"somestrange\" in comment is "
+                                    "unknown.">>
+                    , range => {{0, 0}, {1, 0}}
+                    , relatedInformation => []
+                    }
+                 ],
+      Hints = [],
+      els_test:run_diagnostics_test(Path, Source, Errors, Warnings, Hints)
+  catch _Err ->
+      file:set_cwd(Cwd)
+  end,
+  ok.
 
 %%==============================================================================
 %% Internal Functions