1 files changed, 1 insertions, 1 deletions
diff --git a/ffi.c b/ffi.c
index 61551228..f8d7b566 100644
--- a/ffi.c
+++ b/ffi.c
@@ -2456,7 +2456,7 @@ static val ffi_varray_null_term_in(struct txr_ffi_type *tft, int copy, mem_t *sr
     offs += elsize;
   }
 
-  return replace(vec_in, vec, zero, length_vec(vec));
+  return if3(vec_in, replace(vec_in, vec, zero, t), vec);
 }
 
 static val ffi_varray_null_term_get(struct txr_ffi_type *tft, mem_t *src,