diff --git a/.gitignore b/.gitignore
index d87e46c..f0e21e9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 ## do not sync generated patterns
 CODE-AFE_pattern*/*
+CODE-AFE_arbitrary_pattern*/*
\ No newline at end of file
diff --git a/moku_arbitrary_pattern_gen.pl b/moku_arbitrary_pattern_gen.pl
index e6569cd..9219786 100644
--- a/moku_arbitrary_pattern_gen.pl
+++ b/moku_arbitrary_pattern_gen.pl
@@ -36,7 +36,7 @@ sub remainder {
 ############################################################
 
 ### create outfile in output directory sorted by sampling frequency ###
-my $dirname = 'CODE-AFE_pattern_'.sprintf("%3.6f", ($baudrate * 1e-6)).'MHz';
+my $dirname = 'CODE-AFE_arbitrtary_pattern_'.sprintf("%3.6f", ($baudrate * 1e-6)).'MHz';
 my $filename = 'CODE-AFE_pattern_'.sprintf("%3.6f", ($sig_freq * 1e-6)).'MHz.txt';
 mkdir($dirname, 0777);
 open(MYOUTFILE, '>>./'.$dirname.'/'.$filename);