diff --git a/api/database.py b/api/database.py
index 3e17798..4b1dc73 100644
--- a/api/database.py
+++ b/api/database.py
@@ -163,11 +163,11 @@ def execute_redo(name: str) -> ChangeSet:
 
 
 def have_snapshot(name: str, tag: str) -> bool:
-    return read(name, f"select id from snapshot_operation where tag = '{tag}'") != None
+    return try_read(name, f"select id from snapshot_operation where tag = '{tag}'") != None
 
 
 def have_snapshot_for_operation(name: str, operation: int) -> bool:
-    return read(name, f"select id from snapshot_operation where id = {operation}") != None
+    return try_read(name, f"select id from snapshot_operation where id = {operation}") != None
 
 
 def have_snapshot_for_current_operation(name: str) -> bool: