diff --git a/lib/active_record/connection_adapters/makara_abstract_adapter.rb b/lib/active_record/connection_adapters/makara_abstract_adapter.rb
index f160a30..b22e107 100644
--- a/lib/active_record/connection_adapters/makara_abstract_adapter.rb
+++ b/lib/active_record/connection_adapters/makara_abstract_adapter.rb
@@ -102,7 +102,7 @@ def custom_error_message?(connection, message)
 
       SQL_MASTER_MATCHERS           = [/^\s*select.+for update$/i, /select.+lock in share mode$/i].map(&:freeze).freeze
       SQL_SLAVE_MATCHERS            = [/^\s*select\s/i].map(&:freeze).freeze
-      SQL_ALL_MATCHERS              = [/^\s*set\s/i].map(&:freeze).freeze
+      SQL_ALL_MATCHERS              = [/\A^\s*set\s/i].map(&:freeze).freeze
       SQL_SKIP_STICKINESS_MATCHERS  = [/^\s*show\s([\w]+\s)?(field|table|database|schema|view|index)(es|s)?/i, /^\s*(set|describe|explain|pragma)\s/i].map(&:freeze).freeze