diff --git a/qutebrowser/misc/editor.py b/qutebrowser/misc/editor.py
index 81323bf5e..fc27b922c 100644
--- a/qutebrowser/misc/editor.py
+++ b/qutebrowser/misc/editor.py
@@ -122,7 +122,8 @@ class ExternalEditor(QObject):
             raise ValueError("Already editing a file!")
         self._text = text
         try:
-            self._oshandle, self._filename = tempfile.mkstemp(text=True)
+            self._oshandle, self._filename = tempfile.mkstemp(text=True,
+                    prefix='qutebrowser_editor_')
             if text:
                 encoding = config.get('general', 'editor-encoding')
                 with open(self._filename, 'w', encoding=encoding) as f: