diff --git a/generateJava.cpp b/generateJava.cpp
index a5bdce6..b6d1d0d 100644
--- a/generateJava.cpp
+++ b/generateJava.cpp
@@ -107,7 +107,9 @@
     if (!isJavaCompatible()) {
         fprintf(stderr,
                 "ERROR: This interface is not Java compatible. The Java backend"
-                " does NOT support union types or native handles.\n");
+                " does NOT support union types nor native handles. "
+                "In addition, vectors of arrays are limited to at most "
+                "one-dimensional arrays.\n");
 
         return UNKNOWN_ERROR;
     }