diff --git a/artiq/language/scan.py b/artiq/language/scan.py
index 2ba8ef2d4..e29748014 100644
--- a/artiq/language/scan.py
+++ b/artiq/language/scan.py
@@ -103,7 +103,7 @@ class RandomScan(ScanObject):
         if seed is None:
             rf = random.random
         else:
-            rf = Random(seed).random
+            rf = random.Random(seed).random
         random.shuffle(self.sequence, rf)
 
     @portable