diff --git a/os/hal/platforms/SPC560Pxx/hal_lld.c b/os/hal/platforms/SPC560Pxx/hal_lld.c
index 2eb9e0e53..f63573ad6 100644
--- a/os/hal/platforms/SPC560Pxx/hal_lld.c
+++ b/os/hal/platforms/SPC560Pxx/hal_lld.c
@@ -124,7 +124,7 @@ void spc_clock_init(void) {
                       (SPC5_FMPLL0_NDIV_VALUE << 16);
   CGM.FMPLL[0].MR.R = 0;                        /* TODO: Add a setting.     */
   CGM.FMPLL[1].CR.R = SPC5_FMPLL1_ODF |
-                      (SPC5_FMPLL1_IDF_VALUE << 26) |
+                      ((SPC5_FMPLL1_IDF_VALUE - 1) << 26) |
                       (SPC5_FMPLL1_NDIV_VALUE << 16);
   CGM.FMPLL[1].MR.R = 0;                        /* TODO: Add a setting.     */