diff --git a/src/yunohost/backup.py b/src/yunohost/backup.py
index c1a4f6adc..82a778491 100644
--- a/src/yunohost/backup.py
+++ b/src/yunohost/backup.py
@@ -2272,6 +2272,18 @@ def backup_info(name, with_details=False, human_readable=False):
         if "hooks" in info.keys():
             system_key = "hooks"
 
+        if "size_details" in info.keys():
+            for category in ["apps", "system"]:
+                for name, key_info in info[category].items():
+                    if name in info["size_details"][category].keys():
+                        key_info["size"] = info["size_details"][category][name]
+                        if human_readable:
+                            key_info["size"] = binary_to_human(key_info["size"]) + 'B'
+                    else:
+                        key_info["size"] = -1
+                        if human_readable:
+                            key_info["size"] = "?"
+
         result["apps"] = info["apps"]
         result["system"] = info[system_key]
     return result