diff --git a/lua/care/core.lua b/lua/care/core.lua
index 05ad69b..c23ba2d 100644
--- a/lua/care/core.lua
+++ b/lua/care/core.lua
@@ -31,7 +31,7 @@ function Core:complete(reason, source_filter)
     self.context.reason = reason
     local offset = self.context.cursor.col
     for i, source in ipairs(sources) do
-        if source.source.is_available() and source:is_enabled() then
+        if source.source:is_available() and source:is_enabled() then
             require("care.sources").complete(self.context, source, function(items, is_incomplete)
                 source.incomplete = is_incomplete or false
                 source.entries = items
diff --git a/lua/care/types/source.lua b/lua/care/types/source.lua
index 5472516..9ad2b7f 100644
--- a/lua/care/types/source.lua
+++ b/lua/care/types/source.lua
@@ -16,7 +16,7 @@
 ---
 --- This function will be called quite often so developers should try to keep it more or less
 --- performant. This won't be an issue in the vast majority of cases though.
----@field is_available? fun(): boolean
+---@field is_available? fun(self: care.source): boolean
 --- This is a function used to get additional details for completion items. This is especially
 --- important for the lsp source which needs to send the `completionItem/resolve` request.
 --- Resolving completion items is used for performance reasons so e.g. the documentation for an item