diff --git a/src/avian/jnienv.h b/src/avian/jnienv.h
index 2e9ae3d882..638fc6a864 100644
--- a/src/avian/jnienv.h
+++ b/src/avian/jnienv.h
@@ -23,7 +23,6 @@
 #define BOOTCLASSPATH_PREPEND_OPTION "bootclasspath/p"
 #define BOOTCLASSPATH_OPTION "bootclasspath"
 #define BOOTCLASSPATH_APPEND_OPTION "bootclasspath/a"
-#define BOOTCLASSPATH_APPEND_OPTION "bootclasspath/a"
 
 namespace vm {