diff --git a/prism/src/prism/NativeIntArray.cc b/prism/src/prism/NativeIntArray.cc
index 2dfd6e43..62db4a2f 100644
--- a/prism/src/prism/NativeIntArray.cc
+++ b/prism/src/prism/NativeIntArray.cc
@@ -31,7 +31,7 @@ JNIEXPORT jlong JNICALL Java_prism_NativeIntArray_NIA_1CreateArray
 (JNIEnv * env, jclass cls, jint size)
 {
     int* a = new int[size];
-    return (long) a;
+    return ptr_to_jlong(a);
 }
 
 JNIEXPORT void JNICALL Java_prism_NativeIntArray_NIA_1DeleteArray
@@ -58,4 +58,4 @@ JNIEXPORT void JNICALL Java_prism_NativeIntArray_NIA_1SetAll
     int* a = (int *) jlong_to_ptr(ptr);
     for(int i = 0; i < count; i++)
         a[i+index] = value;
-}
\ No newline at end of file
+}