diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
index 993e8b61c4b29a58b5f124d04f41025a78825165..63aa6730e89ea511492f6e101f48107fa59c8c3e 100644
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -901,7 +901,7 @@ static int get_dimm_config(struct mem_ctl_info *mci)
 	else
 		edac_dbg(0, "Memory is unregistered\n");
 
-	if (mtype == MEM_DDR4 || MEM_RDDR4)
+	if (mtype == MEM_DDR4 || mtype == MEM_RDDR4)
 		banks = 16;
 	else
 		banks = 8;