diff --git a/board/freescale/corenet_ds/ddr.c b/board/freescale/corenet_ds/ddr.c
index 98024c72d7f02ed8f347d6720403f16a9a967a4b..f2b716d4ae1dce6eac26f0153140150efce72677 100644
--- a/board/freescale/corenet_ds/ddr.c
+++ b/board/freescale/corenet_ds/ddr.c
@@ -219,7 +219,7 @@ void fsl_ddr_board_options(memctl_options_t *popts,
 	popts->ddr_cdr1 = DDR_CDR1_DHC_EN;
 
 	/* override SPD values. rcw_2 should vary at differnt speed */
-	if (pdimm[0].n_ranks == 4) {
+	if (pdimm[0].registered_dimm == 1) {
 		popts->rcw_override = 1;
 		popts->rcw_1 = 0x000a5a00;
 		if (ddr_freq <= 800)