diff --git a/ale_linters/kotlin/kotlinc.vim b/ale_linters/kotlin/kotlinc.vim
index 96700bf..8d66b37 100644
--- a/ale_linters/kotlin/kotlinc.vim
+++ b/ale_linters/kotlin/kotlinc.vim
@@ -46,8 +46,10 @@ function! ale_linters#kotlin#kotlinc#GetCommand(buffer, import_paths) abort
 
     " If the config file is enabled and readable, source it
     if ale#Var(a:buffer, 'kotlin_kotlinc_enable_config')
-        if filereadable(expand(ale#Var(a:buffer, 'kotlin_kotlinc_config_file'), 1))
-            execute 'source ' . ale#Escape(expand(ale#Var(a:buffer, 'kotlin_kotlinc_config_file'), 1))
+        let l:conf = expand(ale#Var(a:buffer, 'kotlin_kotlinc_config_file'), 1)
+
+        if filereadable(l:conf)
+            execute 'source ' . fnameescape(l:conf)
         endif
     endif