diff --git a/arch/arm64/arch_arm64.cpp b/arch/arm64/arch_arm64.cpp
index fd4942fd5..2d3f88990 100644
--- a/arch/arm64/arch_arm64.cpp
+++ b/arch/arm64/arch_arm64.cpp
@@ -2749,7 +2749,7 @@ class AppleArm64SystemCallConvention : public CallingConvention
 	}
 
 
-	virtual vector<uint32_t> GetCallerSavedRegisters() override { return vector<uint32_t> {REG_X0}; }
+	virtual vector<uint32_t> GetCallerSavedRegisters() override { return vector<uint32_t> {REG_X0, REG_X1}; }
 
 
 	virtual vector<uint32_t> GetCalleeSavedRegisters() override
@@ -2761,6 +2761,8 @@ class AppleArm64SystemCallConvention : public CallingConvention
 
 	virtual uint32_t GetIntegerReturnValueRegister() override { return REG_X0; }
 
+	virtual uint32_t GetHighIntegerReturnValueRegister() override { return REG_X1; }
+
 
 	virtual bool IsEligibleForHeuristics() override { return false; }
 };