diff --git a/buckets/dechunk_buckets.c b/buckets/dechunk_buckets.c
index a9d6ec8..eda1e22 100644
--- a/buckets/dechunk_buckets.c
+++ b/buckets/dechunk_buckets.c
@@ -172,6 +172,7 @@
 
         case STATE_DONE:
             /* Just keep returning EOF */
+            *len = 0;
             return APR_EOF;
 
         default: