diff --git a/lib/irb/ruby-lex.rb b/lib/irb/ruby-lex.rb
index 41891f8987..6f8076c261 100644
--- a/lib/irb/ruby-lex.rb
+++ b/lib/irb/ruby-lex.rb
@@ -308,7 +308,7 @@ class RubyLex
 
   def check_newline_depth_difference
     depth_difference = 0
-    if @tokens.size >= 2 and @tokens.last[2].end_with?("\n") and @tokens[-2][3].nobits?(Ripper::EXPR_END | Ripper::EXPR_ENDFN)
+    if @tokens.size >= 2 and @tokens.last[2].end_with?("\n") and @tokens[-2][3].nobits?(Ripper::EXPR_END | Ripper::EXPR_ENDFN | Ripper::EXPR_CMDARG)
       return 1
     end
     @tokens.each_with_index do |t, index|