diff --git a/runtime/oat.h b/runtime/oat.h
index 989e3f9..fde386f 100644
--- a/runtime/oat.h
+++ b/runtime/oat.h
@@ -38,6 +38,7 @@
   static constexpr const char* kDex2OatHostKey = "dex2oat-host";
   static constexpr const char* kPicKey = "pic";
   static constexpr const char* kDebuggableKey = "debuggable";
+  static constexpr const char* kExtractOnlyKey = "extract-only";
   static constexpr const char* kClassPathKey = "classpath";
   static constexpr const char* kBootClassPath = "bootclasspath";
 
@@ -106,6 +107,7 @@
   size_t GetHeaderSize() const;
   bool IsPic() const;
   bool IsDebuggable() const;
+  bool IsExtractOnly() const;
 
  private:
   OatHeader(InstructionSet instruction_set,