diff --git a/desmume/src/arm_jit.cpp b/desmume/src/arm_jit.cpp
index 892e0907f..d79891b9d 100644
--- a/desmume/src/arm_jit.cpp
+++ b/desmume/src/arm_jit.cpp
@@ -243,12 +243,12 @@ static GPVar total_cycles;
 #define cpu_ptr(x)			dword_ptr(bb_cpu, offsetof(armcpu_t, x))
 #define cpu_ptr_byte(x, y)	byte_ptr(bb_cpu, offsetof(armcpu_t, x) + y)
 #define flags_ptr			cpu_ptr_byte(CPSR.val, 3)
-#define reg_ptr(x)			dword_ptr(bb_cpu, offsetof(armcpu_t, R[x]))
-#define reg_pos_ptr(x)		dword_ptr(bb_cpu, offsetof(armcpu_t, R[REG_POS(i,(x))]))
-#define reg_pos_ptrL(x)		word_ptr( bb_cpu, offsetof(armcpu_t, R[REG_POS(i,(x))]))
-#define reg_pos_ptrH(x)		word_ptr( bb_cpu, offsetof(armcpu_t, R[REG_POS(i,(x))]) + 2)
-#define reg_pos_ptrB(x)		byte_ptr( bb_cpu, offsetof(armcpu_t, R[REG_POS(i,(x))]))
-#define reg_pos_thumb(x)	dword_ptr(bb_cpu, offsetof(armcpu_t, R[(i>>(x))&0x7]))
+#define reg_ptr(x)			dword_ptr(bb_cpu, offsetof(armcpu_t, R) + 4*(x))
+#define reg_pos_ptr(x)		dword_ptr(bb_cpu, offsetof(armcpu_t, R) + 4*REG_POS(i,(x)))
+#define reg_pos_ptrL(x)		word_ptr( bb_cpu, offsetof(armcpu_t, R) + 4*REG_POS(i,(x)))
+#define reg_pos_ptrH(x)		word_ptr( bb_cpu, offsetof(armcpu_t, R) + 4*REG_POS(i,(x)) + 2)
+#define reg_pos_ptrB(x)		byte_ptr( bb_cpu, offsetof(armcpu_t, R) + 4*REG_POS(i,(x)))
+#define reg_pos_thumb(x)	dword_ptr(bb_cpu, offsetof(armcpu_t, R) + 4*((i>>(x))&0x7))
 #define cp15_ptr(x)			dword_ptr(bb_cp15, offsetof(armcp15_t, x))
 #define mmu_ptr(x)			dword_ptr(bb_mmu, offsetof(MMU_struct, x))
 #define mmu_ptr_byte(x)		byte_ptr(bb_mmu, offsetof(MMU_struct, x))