diff --git a/autoload/ale/python.vim b/autoload/ale/python.vim
index 02e26b41..4c516abf 100644
--- a/autoload/ale/python.vim
+++ b/autoload/ale/python.vim
@@ -27,7 +27,7 @@ endfunction
 function! ale#python#FindVirtualenv(buffer) abort
     for l:path in ale#path#Upwards(expand('#' . a:buffer . ':p:h'))
         for l:dirname in ale#Var(a:buffer, 'virtualenv_dir_names')
-            let l:venv_dir = l:path . '/' . l:dirname
+            let l:venv_dir = simplify(l:path . '/' . l:dirname)
 
             if filereadable(l:venv_dir . '/bin/activate')
                 return l:venv_dir