diff --git a/src/vnet/api_errno.h b/src/vnet/api_errno.h
index 9e261d7..eb25f05 100644
--- a/src/vnet/api_errno.h
+++ b/src/vnet/api_errno.h
@@ -80,7 +80,7 @@
 _(NOT_RUNNING_AS_ROOT, -85, "Not running as root") \
 _(ALREADY_CONNECTED, -86, "Connection to the data plane already exists") \
 _(UNSUPPORTED_JNI_VERSION, -87, "Unsupported JNI version") \
-_(FAILED_TO_ATTACH_TO_JAVA_THREAD, -88, "Failed to attach to Java thread") \
+_(IP_PREFIX_INVALID, -88, "IP prefix invalid (masked bits set in address") \
 _(INVALID_WORKER, -89, "Invalid worker thread")                         \
 _(LISP_DISABLED, -90, "LISP is disabled")                               \
 _(CLASSIFY_TABLE_NOT_FOUND, -91, "Classify table not found")            \