diff --git a/src/main/native/packr/src/packr.h b/src/main/native/packr/src/packr.h
index b93397ba..94f7340f 100644
--- a/src/main/native/packr/src/packr.h
+++ b/src/main/native/packr/src/packr.h
@@ -19,10 +19,6 @@
 #include <functional>
 #include <jni.h>
 
-#if !defined(JNI_VERSION_1_8)
-# define JNI_VERSION_1_8 0x00010008
-#endif
-
 typedef jint(JNICALL *GetDefaultJavaVMInitArgs)(void*);
 typedef jint(JNICALL *CreateJavaVM)(JavaVM**, void**, void*);