diff --git a/lib/sequel/pgt_outbox.rb b/lib/sequel/pgt_outbox.rb
index 20dab34..f6c76dc 100644
--- a/lib/sequel/pgt_outbox.rb
+++ b/lib/sequel/pgt_outbox.rb
@@ -39,9 +39,9 @@ def depth_guard_clause(depth_limit = nil)
       depth_limit = depth_limit.to_i
       raise ArgumentError, ':trigger_depth_limit option must be at least 1' unless depth_limit >= 1
 
-      <<-SQL
-      IF pg_trigger_depth() > #{depth_limit} THEN
-          RETURN NEW;
+      <<~SQL
+        IF pg_trigger_depth() > #{depth_limit} THEN
+            RETURN NEW;
         END IF;
       SQL
     end
diff --git a/test/sequel/test_pgt_outbox.rb b/test/sequel/test_pgt_outbox.rb
index 95cb738..fa42bc4 100755
--- a/test/sequel/test_pgt_outbox.rb
+++ b/test/sequel/test_pgt_outbox.rb
@@ -15,8 +15,8 @@ class Crass
   def depth_sql(depth)
     <<~SQL.strip
       IF pg_trigger_depth() > #{depth} THEN
-                RETURN NEW;
-              END IF;
+          RETURN NEW;
+      END IF;
     SQL
   end