diff --git a/litex_boards/targets/sitlinv_stlv7325_v2.py b/litex_boards/targets/sitlinv_stlv7325_v2.py
index a872c46..6e5858c 100755
--- a/litex_boards/targets/sitlinv_stlv7325_v2.py
+++ b/litex_boards/targets/sitlinv_stlv7325_v2.py
@@ -112,8 +112,8 @@ class BaseSoC(SoCCore):
             self.ethphy = LiteEthPHYRGMII(
                 clock_pads = self.platform.request("eth_clocks", 0),
                 pads       = self.platform.request("eth", 0),
-                tx_delay = 1.48-9,
-                rx_delay = 1.48-9,
+                tx_delay = 1.48e-9,
+                rx_delay = 1.48e-9,
             )
             self.add_ethernet(phy=self.ethphy)