1 files changed, 1 insertions, 1 deletions
diff --git a/src/rt/rust_builtin.cpp b/src/rt/rust_builtin.cpp
index f9d1f71f0ac..f9c95db1d04 100644
--- a/src/rt/rust_builtin.cpp
+++ b/src/rt/rust_builtin.cpp
@@ -182,7 +182,7 @@ rand_seed() {
     rust_vec *v = (rust_vec *) task->kernel->malloc(vec_size<uint8_t>(size),
                                             "rand_seed");
     v->fill = v->alloc = size;
-    isaac_seed(task->kernel, (uint8_t*) &v->data);
+    isaac_seed(task->kernel, (uint8_t*) &v->data, size);
     return v;
 }