diff --git a/sdk/src/ipld.rs b/sdk/src/ipld.rs
index c857481e0..79409a296 100644
--- a/sdk/src/ipld.rs
+++ b/sdk/src/ipld.rs
@@ -35,6 +35,7 @@ pub fn get(cid: &Cid) -> SyscallResult<Vec<u8>> {
         let mut block = Vec::with_capacity(size as usize);
         let remaining = sys::ipld::read(id, 0, block.as_mut_ptr(), size)?;
         debug_assert_eq!(remaining, 0, "expected to read the block exactly");
+        block.set_len(size as usize);
         Ok(block)
     }
 }