diff --git a/src/include/spd.h b/src/include/spd.h
index 8493d40b6e..ca78d9ce98 100644
--- a/src/include/spd.h
+++ b/src/include/spd.h
@@ -236,8 +236,8 @@ enum ddr4_module_type {
 	DDR4_SPD_LRDIMM = 0x04,
 	DDR4_SPD_MINI_RDIMM = 0x05,
 	DDR4_SPD_MINI_UDIMM = 0x06,
-	DDR4_SPD_72B_SO_UDIMM = 0x08,
-	DDR4_SPD_72B_SO_RDIMM = 0x09,
+	DDR4_SPD_72B_SO_RDIMM = 0x08,
+	DDR4_SPD_72B_SO_UDIMM = 0x09,
 	DDR4_SPD_16B_SO_DIMM = 0x0c,
 	DDR4_SPD_32B_SO_RDIMM = 0x0d,
 };