diff --git a/src/drivers/nv3.c b/src/drivers/nv3.c
index e998030..04314f5 100644
--- a/src/drivers/nv3.c
+++ b/src/drivers/nv3.c
@@ -878,7 +878,7 @@ static int CalcVClock
     for (P = 0; P <= P_MAX; P ++)
     {
         Freq = VClk << P;
-        if ((Freq >= 128000) && (Freq <= MAXVCLOCK))
+        if ((Freq >= 128000 || P == P_MAX) && (Freq <= MAXVCLOCK))
         {
             for (M = M_MIN; M <= M_MAX; M++)
             {