diff --git a/src/arm/isa-arm.c b/src/arm/isa-arm.c
index 89f3e0bbb..fdf8e3379 100644
--- a/src/arm/isa-arm.c
+++ b/src/arm/isa-arm.c
@@ -569,7 +569,7 @@ DEFINE_ALU_INSTRUCTION_ARM(ADD, ARM_ADDITION_S(n, cpu->shifterOperand, cpu->gprs
 	int32_t n = cpu->gprs[rn];
 	cpu->gprs[rd] = n + cpu->shifterOperand;)
 
-DEFINE_ALU_INSTRUCTION_ARM(ADC, ARM_ADDITION_S(cpu->gprs[rn], shifterOperand, cpu->gprs[rd]),
+DEFINE_ALU_INSTRUCTION_ARM(ADC, ARM_ADDITION_S(n, shifterOperand, cpu->gprs[rd]),
 	int32_t n = cpu->gprs[rn];
 	int32_t shifterOperand = cpu->shifterOperand + cpu->cpsr.c;
 	cpu->gprs[rd] = n + shifterOperand;)