diff --git a/qutebrowser/mainwindow/prompt.py b/qutebrowser/mainwindow/prompt.py
index f489a81f0..5e686a375 100644
--- a/qutebrowser/mainwindow/prompt.py
+++ b/qutebrowser/mainwindow/prompt.py
@@ -556,7 +556,10 @@ class FilenamePrompt(_BasePrompt):
         dirname = os.path.dirname(path)
 
         try:
-            if path[-1] in separators and os.path.isdir(path):
+            if path in separators and os.path.isdir(path):
+                # Input "/" -> don't strip anything
+                pass
+            elif path[-1] in separators and os.path.isdir(path):
                 # Input like /foo/bar/ -> show /foo/bar/ contents
                 path = path.rstrip(separators)
             elif os.path.isdir(dirname) and not tabbed:
diff --git a/tests/unit/mainwindow/test_prompt.py b/tests/unit/mainwindow/test_prompt.py
index 98cd8b550..1288ccd3f 100644
--- a/tests/unit/mainwindow/test_prompt.py
+++ b/tests/unit/mainwindow/test_prompt.py
@@ -85,3 +85,9 @@ class TestFileCompletion:
         prompt.item_focus('next')
         prompt.item_focus('next')
         assert prompt._lineedit.text() == str(tmpdir / 'bar')
+
+    @pytest.mark.linux
+    def test_root_path(self, get_prompt):
+        """With / as path, show root contents."""
+        prompt = get_prompt('/')
+        assert prompt._file_model.rootPath() == '/'