diff --git a/plat/renesas/rcar/ddr/H3/ES10/init_dram_tbl_h3_es10.h b/plat/renesas/rcar/ddr/H3/ES10/init_dram_tbl_h3_es10.h
index b6edfb5..5d3bcc6 100644
--- a/plat/renesas/rcar/ddr/H3/ES10/init_dram_tbl_h3_es10.h
+++ b/plat/renesas/rcar/ddr/H3/ES10/init_dram_tbl_h3_es10.h
@@ -49,7 +49,7 @@
 #define PI_TCCDMW 0x20
 #define PI_TDQSCK_MAX 0x6
 //////////////////////////////////////////////////////////////////////////////
-#define PI_MR1  0xd4	//MRW DeviceFeature1(Post=1.5tck nWR=30 RDpre=static WRPre=2tCK BL=16//OK
+#define PI_MR1  0xd4U	//MRW DeviceFeature1(Post=1.5tck nWR=30 RDpre=static WRPre=2tCK BL=16//OK
 #define PI_MR2  0x2e	//MRW DeviceFeature2(0,0SetA,101=WL14,110=RL32(nRTP14))//NG
 #define PI_MR3  0x31
 #define PI_MR11 0x36
diff --git a/plat/renesas/rcar/ddr/H3/WS11/init_dram_tbl_h3_ws11.h b/plat/renesas/rcar/ddr/H3/WS11/init_dram_tbl_h3_ws11.h
index 370f87f..971cb0b 100644
--- a/plat/renesas/rcar/ddr/H3/WS11/init_dram_tbl_h3_ws11.h
+++ b/plat/renesas/rcar/ddr/H3/WS11/init_dram_tbl_h3_ws11.h
@@ -28,7 +28,7 @@
 #define PI_TCCDMW 0x20
 #define PI_TDQSCK_MAX 0x6
 //////////////////////////////////////////////////////////////////////////////
-#define PI_MR1  0xd4
+#define PI_MR1  0xd4U
 #define PI_MR2  0x2e
 #define PI_MR3  0x31
 #define PI_MR11 0x36