diff --git a/pyleds/program/peter/DiskoPidu.py b/pyleds/program/peter/DiskoPidu.py
index bf566fc..7f5baf5 100644
--- a/pyleds/program/peter/DiskoPidu.py
+++ b/pyleds/program/peter/DiskoPidu.py
@@ -13,7 +13,7 @@ def name():
 
 class DiskoPidu(Program):
 
-    def disco(self, segmentLength, wait_ms=50):
+    def disco(self, segmentLength, wait_ms):
         color = random.randint(0, 0xffffff)
         totalLength = self._lm.count_pixels()
         for p in range(totalLength):
@@ -30,7 +30,7 @@ class DiskoPidu(Program):
             loop = args['loop']
 
         while self.get_loop().status():
-            self.disco(10)
+            self.disco(10, 500)
 
             if not loop:
                 break