diff --git a/compiler/optimizing/builder.cc b/compiler/optimizing/builder.cc
index 2648d4d..2f1a092 100644
--- a/compiler/optimizing/builder.cc
+++ b/compiler/optimizing/builder.cc
@@ -267,6 +267,13 @@
 }
 
 template<typename T>
+void HGraphBuilder::Unop_12x(const Instruction& instruction, Primitive::Type type) {
+  HInstruction* first = LoadLocal(instruction.VRegB(), type);
+  current_block_->AddInstruction(new (arena_) T(type, first));
+  UpdateLocal(instruction.VRegA(), current_block_->GetLastInstruction());
+}
+
+template<typename T>
 void HGraphBuilder::Binop_23x(const Instruction& instruction, Primitive::Type type) {
   HInstruction* first = LoadLocal(instruction.VRegB(), type);
   HInstruction* second = LoadLocal(instruction.VRegC(), type);
@@ -678,6 +685,11 @@
       break;
     }
 
+    case Instruction::NEG_INT: {
+      Unop_12x<HNeg>(instruction, Primitive::kPrimInt);
+      break;
+    }
+
     case Instruction::ADD_INT: {
       Binop_23x<HAdd>(instruction, Primitive::kPrimInt);
       break;