diff --git a/ale_linters/dart/language_server.vim b/ale_linters/dart/language_server.vim
index 14b6ab93..2e5a7e61 100644
--- a/ale_linters/dart/language_server.vim
+++ b/ale_linters/dart/language_server.vim
@@ -15,6 +15,6 @@ call ale#linter#Define('dart', {
 \   'name': 'language_server',
 \   'lsp': 'stdio',
 \   'executable_callback': ale#VarFunc('dart_language_server_executable'),
-\   'command_callback': 'ale_linters#dart#language_server#GetExecutable',
+\   'command_callback': ale#VarFunc('dart_language_server_executable'),
 \   'project_root_callback': 'ale_linters#dart#language_server#GetProjectRoot',
 \})