diff --git a/50_bubble.py b/50_bubble.py
index 079979a..52a8dab 100644
--- a/50_bubble.py
+++ b/50_bubble.py
@@ -18,7 +18,7 @@ from utils import *
 from worker import *
 
 
-__version__ = '7.3'
+__version__ = '7.4'
 
 
 class Bubble:
diff --git a/user.py b/user.py
index 3881401..32acd41 100644
--- a/user.py
+++ b/user.py
@@ -310,8 +310,11 @@ class Subgrouping:
     def render(self):
         src = []
         top_head = False
+        prev_top_head = False
         for post_id, notifs in self.by_post.items():
+            prev_top_head = top_head
             top_head = post_id and len(notifs) > 1
+            # Print a common heading.
             if top_head:
                 n = notifs[0]
                 if n.post_subname and n.post_subowner != self.user.id:
@@ -321,6 +324,10 @@ class Subgrouping:
                 if src:
                     src.append('')
                 src.append(f'"{n.title_text()}"{sub_text}:')
+            elif prev_top_head:
+                # Sepearate from previous grouping.
+                src.append('')
+            # Print the notifications.
             for notif in notifs:
                 src.append('=> %s %s' % notif.entry(with_title=not top_head))
         return '\n'.join(src) + '\n'