diff --git a/src/rt/rust_cc.cpp b/src/rt/rust_cc.cpp
index 87b9f62e106..fc075f29a30 100644
--- a/src/rt/rust_cc.cpp
+++ b/src/rt/rust_cc.cpp
@@ -71,7 +71,7 @@ class irc : public shape::data<irc,shape::ptr> {
             return;     // There can't be any outbound pointers from this.
 
         std::pair<uint8_t *,uint8_t *> data_range(get_vec_data_range(dp));
-        if (data_range.second - data_range.first > 10000)
+        if (data_range.second - data_range.first > 100000)
             abort();    // FIXME: Temporary sanity check.
 
         irc sub(*this, data_range.first);