diff --git a/src/southbridge/intel/ibexpeak/fadt.c b/src/southbridge/intel/ibexpeak/fadt.c
index 87adcb34d2..302e870490 100644
--- a/src/southbridge/intel/ibexpeak/fadt.c
+++ b/src/southbridge/intel/ibexpeak/fadt.c
@@ -23,10 +23,10 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 	}
 
 	fadt->pm1a_evt_blk = pmbase;
-	fadt->pm1a_cnt_blk = pmbase + 0x4;
-	fadt->pm2_cnt_blk = pmbase + 0x50;
-	fadt->pm_tmr_blk = pmbase + 0x8;
-	fadt->gpe0_blk = pmbase + 0x20;
+	fadt->pm1a_cnt_blk = pmbase + PM1_CNT;
+	fadt->pm2_cnt_blk = pmbase + PM2_CNT;
+	fadt->pm_tmr_blk = pmbase + PM1_TMR;
+	fadt->gpe0_blk = pmbase + GPE0_STS;
 
 	fadt->pm1_evt_len = 4;
 	fadt->pm1_cnt_len = 2;
@@ -59,38 +59,38 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 		fadt->flags |= ACPI_FADT_C2_MP_SUPPORTED;
 	}
 
-	fadt->x_pm1a_evt_blk.space_id = 1;
+	fadt->x_pm1a_evt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->x_pm1a_evt_blk.bit_width = 32;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
 	fadt->x_pm1a_evt_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS;
 	fadt->x_pm1a_evt_blk.addrl = pmbase;
 	fadt->x_pm1a_evt_blk.addrh = 0x0;
 
-	fadt->x_pm1a_cnt_blk.space_id = 1;
+	fadt->x_pm1a_cnt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->x_pm1a_cnt_blk.bit_width = 16;
 	fadt->x_pm1a_cnt_blk.bit_offset = 0;
 	fadt->x_pm1a_cnt_blk.access_size = ACPI_ACCESS_SIZE_WORD_ACCESS;
-	fadt->x_pm1a_cnt_blk.addrl = pmbase + 0x4;
+	fadt->x_pm1a_cnt_blk.addrl = pmbase + PM1_CNT;
 	fadt->x_pm1a_cnt_blk.addrh = 0x0;
 
-	fadt->x_pm2_cnt_blk.space_id = 1;
+	fadt->x_pm2_cnt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->x_pm2_cnt_blk.bit_width = 8;
 	fadt->x_pm2_cnt_blk.bit_offset = 0;
 	fadt->x_pm2_cnt_blk.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
-	fadt->x_pm2_cnt_blk.addrl = pmbase + 0x50;
+	fadt->x_pm2_cnt_blk.addrl = pmbase + PM2_CNT;
 	fadt->x_pm2_cnt_blk.addrh = 0x0;
 
-	fadt->x_pm_tmr_blk.space_id = 1;
+	fadt->x_pm_tmr_blk.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->x_pm_tmr_blk.bit_width = 32;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
 	fadt->x_pm_tmr_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS;
-	fadt->x_pm_tmr_blk.addrl = pmbase + 0x8;
+	fadt->x_pm_tmr_blk.addrl = pmbase + PM1_TMR;
 	fadt->x_pm_tmr_blk.addrh = 0x0;
 
-	fadt->x_gpe0_blk.space_id = 1;
+	fadt->x_gpe0_blk.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->x_gpe0_blk.bit_width = 128;
 	fadt->x_gpe0_blk.bit_offset = 0;
 	fadt->x_gpe0_blk.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
-	fadt->x_gpe0_blk.addrl = pmbase + 0x20;
+	fadt->x_gpe0_blk.addrl = pmbase + GPE0_STS;
 	fadt->x_gpe0_blk.addrh = 0x0;
 }