diff --git a/reactos/boot/freeldr/freeldr/arch/amd64/int386.S b/reactos/boot/freeldr/freeldr/arch/amd64/int386.S
index cd58fce70b7..fe5f3256c4f 100644
--- a/reactos/boot/freeldr/freeldr/arch/amd64/int386.S
+++ b/reactos/boot/freeldr/freeldr/arch/amd64/int386.S
@@ -19,6 +19,7 @@
 
 #include <asm.inc>
 #include <arch/pc/x86common.h>
+#include <arch/pc/pcbios.h>
 .code64
 
 EXTERN CallRealMode:PROC
diff --git a/reactos/boot/freeldr/freeldr/arch/i386/entry.S b/reactos/boot/freeldr/freeldr/arch/i386/entry.S
index d352f10e79f..63c0a0b3048 100644
--- a/reactos/boot/freeldr/freeldr/arch/i386/entry.S
+++ b/reactos/boot/freeldr/freeldr/arch/i386/entry.S
@@ -19,6 +19,7 @@
 
 #include <asm.inc>
 #include <arch/pc/x86common.h>
+#include <arch/pc/pcbios.h>
 
 EXTERN _BootMain:PROC
 EXTERN _InitIdt:PROC
diff --git a/reactos/boot/freeldr/freeldr/arch/i386/int386.S b/reactos/boot/freeldr/freeldr/arch/i386/int386.S
index 52930ec58d1..87b914ae95e 100644
--- a/reactos/boot/freeldr/freeldr/arch/i386/int386.S
+++ b/reactos/boot/freeldr/freeldr/arch/i386/int386.S
@@ -45,6 +45,8 @@ Int386_esi:
 	.long 0
 Int386_edi:
 	.long 0
+Int386_ebp:
+	.long 0
 
 Int386_ds:
 	.word 0
diff --git a/reactos/boot/freeldr/freeldr/arch/realmode/int386.inc b/reactos/boot/freeldr/freeldr/arch/realmode/int386.inc
index 1fe18fb6062..d6a08088028 100644
--- a/reactos/boot/freeldr/freeldr/arch/realmode/int386.inc
+++ b/reactos/boot/freeldr/freeldr/arch/realmode/int386.inc
@@ -1,4 +1,5 @@
 
+#include "../../include/arch/pc/pcbios.h"
 
 Int386:
 	/* Save all registers + segment registers */
diff --git a/reactos/boot/freeldr/freeldr/include/arch/pc/pcbios.h b/reactos/boot/freeldr/freeldr/include/arch/pc/pcbios.h
index 69a3036e4d4..dcf89b3c641 100644
--- a/reactos/boot/freeldr/freeldr/include/arch/pc/pcbios.h
+++ b/reactos/boot/freeldr/freeldr/include/arch/pc/pcbios.h
@@ -10,6 +10,7 @@ typedef struct
 
 	unsigned long	esi;
 	unsigned long	edi;
+	unsigned long	ebp;
 
 	unsigned short	ds;
 	unsigned short	es;
@@ -29,6 +30,7 @@ typedef struct
 
 	unsigned short	si, _upper_si;
 	unsigned short	di, _upper_di;
+	unsigned short	bp, _upper_bp;
 
 	unsigned short	ds;
 	unsigned short	es;
@@ -56,6 +58,7 @@ typedef struct
 
 	unsigned short	si, _upper_si;
 	unsigned short	di, _upper_di;
+	unsigned short	bp, _upper_bp;
 
 	unsigned short	ds;
 	unsigned short	es;
@@ -96,3 +99,19 @@ VOID	SoftReboot(VOID);					// Implemented in boot.S
 VOID	DetectHardware(VOID);		// Implemented in hardware.c
 
 #endif /* ! __ASM__ */
+
+/* Layout of the REGS structure */
+#define REGS_EAX 0
+#define REGS_EBX 4
+#define REGS_ECX 8
+#define REGS_EDX 12
+#define REGS_ESI 16
+#define REGS_EDI 20
+#define REGS_EBP 24
+#define REGS_DS 28
+#define REGS_ES 30
+#define REGS_FS 32
+#define REGS_GS 34
+#define REGS_EFLAGS 36
+#define REGS_SIZE 40
+
diff --git a/reactos/boot/freeldr/freeldr/include/arch/pc/x86common.h b/reactos/boot/freeldr/freeldr/include/arch/pc/x86common.h
index 4cdc80e57df..44a24c4e047 100644
--- a/reactos/boot/freeldr/freeldr/include/arch/pc/x86common.h
+++ b/reactos/boot/freeldr/freeldr/include/arch/pc/x86common.h
@@ -23,25 +23,10 @@
 #define BIOSCALLBUFSEGMENT (BIOSCALLBUFFER/16) /* Buffer to store temporary data for any Int386() call */
 #define BIOSCALLBUFOFFSET   HEX(0000) /* Buffer to store temporary data for any Int386() call */
 
-/* Layout of the REGS structure */
-#define REGS_EAX 0
-#define REGS_EBX 4
-#define REGS_ECX 8
-#define REGS_EDX 12
-#define REGS_ESI 16
-#define REGS_EDI 20
-#define REGS_DS 24
-#define REGS_ES 26
-#define REGS_FS 28
-#define REGS_GS 30
-#define REGS_EFLAGS 32
-#define REGS_SIZE 36
-
 /* These addresses specify the realmode "BSS section" layout */
 #define BSS_RealModeEntry        (BSS_START +  0)
-#define BSS_CallbackAddress      (BSS_START +  4)
-#define BSS_CallbackReturn       (BSS_START +  8)
-#define BSS_RegisterSet          (BSS_START + 16) /* size = 36 */
+#define BSS_CallbackReturn       (BSS_START +  4)
+#define BSS_RegisterSet          (BSS_START +  8) /* size = 40 */
 #define BSS_IntVector            (BSS_START + 52)
 #define BSS_PxeEntryPoint        (BSS_START + 56)
 #define BSS_PxeBufferSegment     (BSS_START + 60)