diff --git a/litex/soc/cores/ussysmon.py b/litex/soc/cores/ussysmon.py
index 62e8140da..0616ce836 100644
--- a/litex/soc/cores/ussysmon.py
+++ b/litex/soc/cores/ussysmon.py
@@ -38,7 +38,7 @@ class USSYSMON(Module, AutoCSR):
         # # #
 
         busy    = Signal()
-        channel = Signal(7)
+        channel = Signal(8)
         eoc     = Signal()
         eos     = Signal()