1 files changed, 2 insertions, 2 deletions
diff --git a/ext/ripper/tools/generate-ripper_rb.rb b/ext/ripper/tools/generate-ripper_rb.rb
index b6fb166568..8a96e4cb1e 100755
--- a/ext/ripper/tools/generate-ripper_rb.rb
+++ b/ext/ripper/tools/generate-ripper_rb.rb
@@ -19,7 +19,7 @@ header
         id, arity = line.split
         arity = arity.to_i
         puts
-        puts "  def on__#{id}#{paramdecl(arity)}"
+        puts "  def on_#{id}#{paramdecl(arity)}"
         puts "    #{arity == 0 ? 'nil' : 'a'}"
         puts "  end"
       end
@@ -28,7 +28,7 @@ header
         id, arity = line.split
         arity = arity.to_i
         puts
-        puts "  def on__#{id}(token)"
+        puts "  def on_#{id}(token)"
         puts "    token"
         puts "  end"
       end