diff --git a/src/classpath-avian.cpp b/src/classpath-avian.cpp
index b878e0400..dbbf82182 100644
--- a/src/classpath-avian.cpp
+++ b/src/classpath-avian.cpp
@@ -729,6 +729,14 @@ Avian_avian_Atomic_getOffset
     (t, jfieldVmField(t, reinterpret_cast<object>(arguments[0])));
 }
 
+extern "C" AVIAN_EXPORT int64_t JNICALL
+Avian_sun_misc_Unsafe_objectFieldOffset
+(Thread* t, object, uintptr_t* arguments)
+{
+  return fieldOffset
+    (t, jfieldVmField(t, reinterpret_cast<object>(arguments[1])));
+}
+
 extern "C" AVIAN_EXPORT int64_t JNICALL
 Avian_avian_Atomic_compareAndSwapObject
 (Thread* t, object, uintptr_t* arguments)