diff --git a/litex_boards/platforms/zybo_z7.py b/litex_boards/platforms/zybo_z7.py
index ed31d713e73d0566b034986a13d613095e0eee14..f9736af58dfa56c93f669e2a7ca88c75daba90b4 100644
--- a/litex_boards/platforms/zybo_z7.py
+++ b/litex_boards/platforms/zybo_z7.py
@@ -89,7 +89,7 @@ _connectors = [
 # Platform -----------------------------------------------------------------------------------------
 
 class Platform(XilinxPlatform):
-    default_clk_name   = "clk128"
+    default_clk_name   = "clk125"
     default_clk_period = 1e9/125e6
 
     def __init__(self):