diff --git a/test/wasmfs/wasmfs_fetch.c b/test/wasmfs/wasmfs_fetch.c
index 5c56b3d3dc108..3b21c79137e56 100644
--- a/test/wasmfs/wasmfs_fetch.c
+++ b/test/wasmfs/wasmfs_fetch.c
@@ -171,6 +171,7 @@ void test_small_chunks() {
   buf[size] = 0;
   printf("buf %s\n",buf);
   assert(strcmp(buf, "hello") == 0);
+  assert(read(fd, buf+size-1, 1024) == 1);
 
   assert(close(fd) == 0);