diff --git a/autoload/ale/util.vim b/autoload/ale/util.vim
index 98fe53e..8eda8a9 100644
--- a/autoload/ale/util.vim
+++ b/autoload/ale/util.vim
@@ -22,19 +22,27 @@ function! ale#util#GetFunction(string_or_ref) abort
 endfunction
 
 function! ale#util#LocItemCompare(left, right) abort
-    if a:left['lnum'] < a:right['lnum']
+    if a:left.bufnr < a:right.bufnr
         return -1
     endif
 
-    if a:left['lnum'] > a:right['lnum']
+    if a:left.bufnr > a:right.bufnr
         return 1
     endif
 
-    if a:left['col'] < a:right['col']
+    if a:left.lnum < a:right.lnum
         return -1
     endif
 
-    if a:left['col'] > a:right['col']
+    if a:left.lnum > a:right.lnum
+        return 1
+    endif
+
+    if a:left.col < a:right.col
+        return -1
+    endif
+
+    if a:left.col > a:right.col
         return 1
     endif
 
diff --git a/test/test_loclist_sorting.vader b/test/test_loclist_sorting.vader
index 6e52be6..c095bdd 100644
--- a/test/test_loclist_sorting.vader
+++ b/test/test_loclist_sorting.vader
@@ -1,9 +1,14 @@
 Before:
   let g:loclist = [
-  \ {'lnum': 5, 'col': 5},
-  \ {'lnum': 5, 'col': 4},
-  \ {'lnum': 2, 'col': 10},
-  \ {'lnum': 3, 'col': 2},
+  \ {'bufnr': 3, 'lnum': 1, 'col': 1},
+  \ {'bufnr': 1, 'lnum': 5, 'col': 5},
+  \ {'bufnr': 2, 'lnum': 5, 'col': 5},
+  \ {'bufnr': 1, 'lnum': 5, 'col': 4},
+  \ {'bufnr': 1, 'lnum': 2, 'col': 10},
+  \ {'bufnr': 2, 'lnum': 1, 'col': 5},
+  \ {'bufnr': 1, 'lnum': 3, 'col': 2},
+  \ {'bufnr': 2, 'lnum': 1, 'col': 2},
+  \ {'bufnr': -1, 'lnum': 3, 'col': 2},
   \]
 
 Execute (Sort loclist with comparison function):
@@ -11,10 +16,15 @@ Execute (Sort loclist with comparison function):
 
 Then (loclist item should be sorted):
   AssertEqual [
-  \ {'lnum': 2, 'col': 10},
-  \ {'lnum': 3, 'col': 2},
-  \ {'lnum': 5, 'col': 4},
-  \ {'lnum': 5, 'col': 5},
+  \ {'bufnr': -1, 'lnum': 3, 'col': 2},
+  \ {'bufnr': 1, 'lnum': 2, 'col': 10},
+  \ {'bufnr': 1, 'lnum': 3, 'col': 2},
+  \ {'bufnr': 1, 'lnum': 5, 'col': 4},
+  \ {'bufnr': 1, 'lnum': 5, 'col': 5},
+  \ {'bufnr': 2, 'lnum': 1, 'col': 2},
+  \ {'bufnr': 2, 'lnum': 1, 'col': 5},
+  \ {'bufnr': 2, 'lnum': 5, 'col': 5},
+  \ {'bufnr': 3, 'lnum': 1, 'col': 1},
   \], g:loclist
 
 After: