diff --git a/REFERENCE.md b/REFERENCE.md
index 1aad4a8..976ec39 100644
--- a/REFERENCE.md
+++ b/REFERENCE.md
@@ -755,7 +755,7 @@ Hash[Enum[
     'max_placeholders_per_statement',
     'max_rows_per_transaction',
     'wsrep_sync_wait'
-  ], Integer[1]]
+  ], Integer[0]]
 ```
 
 ### <a name="IcingaDB--LoggingOptions"></a>`IcingaDB::LoggingOptions`
diff --git a/types/dboptions.pp b/types/dboptions.pp
index e532b92..2353cb0 100644
--- a/types/dboptions.pp
+++ b/types/dboptions.pp
@@ -8,5 +8,5 @@
     'max_placeholders_per_statement',
     'max_rows_per_transaction',
     'wsrep_sync_wait'
-  ], Integer[1]
+  ], Integer[0]
 ]