diff --git a/backend/search.py b/backend/search.py
index badbc22..ff76c07 100644
--- a/backend/search.py
+++ b/backend/search.py
@@ -1204,7 +1204,7 @@ def get_all_tags(vault_filter: Optional[str] = None) -> Dict[str, int]:
     """
     merged: Dict[str, int] = {}
     for vault_name, vault_data in index.items():
-        if vault_filter and vault_name != vault_filter:
+        if vault_filter and vault_filter != "all" and vault_name != vault_filter:
             continue
         for tag, count in vault_data.get("tags", {}).items():
             merged[tag] = merged.get(tag, 0) + count