diff --git a/src/gateware/wrpll.py b/src/gateware/wrpll.py
index fb44047..205a1f1 100644
--- a/src/gateware/wrpll.py
+++ b/src/gateware/wrpll.py
@@ -128,7 +128,7 @@ class WRPLL(Module, AutoCSR):
 
 class SMAFrequencyMultiplier(Module, AutoCSR):
     def __init__(self, sma_clkin):
-        freq = 125e9
+        freq = 125e6
         period = 1e9/freq # ns
 
         mmcm_locked = Signal()