diff --git a/cheevos/cheevos.c b/cheevos/cheevos.c
index ba0356b8e7..e98f79fb72 100644
--- a/cheevos/cheevos.c
+++ b/cheevos/cheevos.c
@@ -2806,7 +2806,9 @@ static int cheevos_iterate(coro_t* coro)
 
          for (;;)
          {
-            buffer = (uint8_t*)DATA + LEN;
+            buffer   = (uint8_t*)DATA + LEN;
+            to_read  = 4096;
+            num_read = 0;
 
             if (to_read > COUNT)
                to_read = COUNT;