diff --git a/wally/suits/io/one_step.cfg b/wally/suits/io/one_step.cfg
index 3e08c8b..507cb9b 100644
--- a/wally/suits/io/one_step.cfg
+++ b/wally/suits/io/one_step.cfg
@@ -5,5 +5,5 @@
 
 [test_{TEST_SUMM}]
 blocksize=60k
-rw=randread
+rw=randwrite
 iodepth=1
\ No newline at end of file