diff --git a/lib/irb/ruby-lex.rb b/lib/irb/ruby-lex.rb
index 53fc65667f..8164fd2a17 100644
--- a/lib/irb/ruby-lex.rb
+++ b/lib/irb/ruby-lex.rb
@@ -366,6 +366,7 @@ class RubyLex
         if is_first_printable_of_line
           corresponding_token_depth = spaces_of_nest.pop
         else
+          spaces_of_nest.pop
           corresponding_token_depth = nil
         end
       when :on_kw
@@ -383,6 +384,7 @@ class RubyLex
           if is_first_printable_of_line
             corresponding_token_depth = spaces_of_nest.pop
           else
+            spaces_of_nest.pop
             corresponding_token_depth = nil
           end
         end