diff --git a/jni/safe_jni.hpp b/jni/safe_jni.hpp
index a4bba38..c19030b 100644
--- a/jni/safe_jni.hpp
+++ b/jni/safe_jni.hpp
@@ -99,9 +99,6 @@ template <typename T=jobject> class safe_local_ref {
 	safe_local_ref(JNIEnv *env, T obj)
 		: env_(env), ref_(obj) {
 	}
-	~safe_local_ref() {
-		env_->DeleteLocalRef(ref_);
-	}
 	T get() const {
 		return ref_;
 	}
diff --git a/project.properties b/project.properties
index 1f2afcc..d7aa37d 100644
--- a/project.properties
+++ b/project.properties
@@ -11,5 +11,5 @@
 #proguard.config=${sdk.dir}\tools\proguard\proguard-android.txt:proguard-project.txt
 
 # Project target.
-target=android-4
+target=android-17
 android.library=true