diff --git a/src/vendorcode/amd/cimx/sb700/SATA.c b/src/vendorcode/amd/cimx/sb700/SATA.c
index 09d49237ea..d5032397fe 100644
--- a/src/vendorcode/amd/cimx/sb700/SATA.c
+++ b/src/vendorcode/amd/cimx/sb700/SATA.c
@@ -238,7 +238,7 @@ void sataInitAfterPciEnum(AMDSBCFG* pConfig){
 void sataDriveDetection(AMDSBCFG* pConfig, UINT32 ddBar5){
 	UINT32	ddVar0;
 	UINT8	dbPortNum, dbVar0;
-	UINT16	dwIoBase, dwVar0;
+	UINT32	dwIoBase, dwVar0;
 
 	TRACE((DMSG_SB_TRACE, "CIMx - Entering sata drive detection procedure\n\n"));
 	TRACE((DMSG_SB_TRACE, "SATA BAR5 is %X \n", ddBar5));
diff --git a/src/vendorcode/amd/cimx/sb800/SATA.c b/src/vendorcode/amd/cimx/sb800/SATA.c
index a3012086e5..73f29687cc 100644
--- a/src/vendorcode/amd/cimx/sb800/SATA.c
+++ b/src/vendorcode/amd/cimx/sb800/SATA.c
@@ -568,7 +568,7 @@ sataDriveDetection (
   UINT8   dbPortNum;
   UINT8   dbVar0;
   UINT16   dwIoBase;
-  UINT16   dwVar0;
+  UINT32   dwVar0;
   if ( (pConfig->SataClass == NATIVE_IDE_MODE) || (pConfig->SataClass == LEGACY_IDE_MODE) || (pConfig->SataClass == IDE_TO_AHCI_MODE) ) {
     for ( dbPortNum = 0; dbPortNum < 4; dbPortNum++ ) {
       ReadMEM (*pBar5 + SB_SATA_BAR5_REG128 + dbPortNum * 0x80, AccWidthUint32, &ddVar0);