diff --git a/gen.py b/gen.py
index de82486..2dc48b5 100644
--- a/gen.py
+++ b/gen.py
@@ -3,7 +3,7 @@ with open('nevergonnagiveyouup.ino') as f:
 
 note_to_freq = {}
 
-tempo = 1
+tempo = 150
 
 with open('rickroll.sh', 'w') as f:
     for line in lines:
@@ -28,7 +28,7 @@ with open('rickroll.sh', 'w') as f:
                     d = int(word)
                     if d < 0:
                         d /= -1.5
-                    l = (60000 * 4)/150/d
+                    l = (60000 * 4)/tempo/d
                     if note:
                         f.write(f' -l {l}\n')
                     else: