diff --git a/compiler/optimizing/code_generator_arm64.h b/compiler/optimizing/code_generator_arm64.h
index c2f055a..b35c520 100644
--- a/compiler/optimizing/code_generator_arm64.h
+++ b/compiler/optimizing/code_generator_arm64.h
@@ -418,6 +418,10 @@
     block_labels_.resize(GetGraph()->GetBlocks().size());
   }
 
+  // We want to use the STP and LDP instructions to spill and restore registers for slow paths.
+  // These instructions can only encode offsets that are multiples of the register size accessed.
+  uint32_t GetPreferredSlotsAlignment() const OVERRIDE { return vixl::kXRegSizeInBytes; }
+
   JumpTableARM64* CreateJumpTable(HPackedSwitch* switch_instr) {
     jump_tables_.emplace_back(new (GetGraph()->GetArena()) JumpTableARM64(switch_instr));
     return jump_tables_.back().get();