diff --git a/src/java_lang_reflect_Constructor.cc b/src/java_lang_reflect_Constructor.cc
index 4d42450..f730543 100644
--- a/src/java_lang_reflect_Constructor.cc
+++ b/src/java_lang_reflect_Constructor.cc
@@ -33,6 +33,7 @@
  * with an interface, array, or primitive class.
  */
 jobject Constructor_constructNative(JNIEnv* env, jobject javaMethod, jobjectArray javaArgs, jclass javaDeclaringClass, jobjectArray javaParams, jint, jboolean) {
+  ScopedThreadStateChange tsc(Thread::Current(), Thread::kRunnable);
   Class* c = Decode<Class*>(env, javaDeclaringClass);
   if (c->IsAbstract()) {
     Thread::Current()->ThrowNewExceptionF("Ljava/lang/InstantiationException;",