diff --git a/repos/os/run/cpu_quota.run b/repos/os/run/cpu_quota.run
index 2fe1bf0ed2..9e07fbbfed 100644
--- a/repos/os/run/cpu_quota.run
+++ b/repos/os/run/cpu_quota.run
@@ -143,7 +143,7 @@ run_genode_until ".*done.*\n.*done.*\n.*done.*\n" 100
 
 proc check_counter { name opt cnt total_cnt } {
 
-	set err         1
+	set err         0.01
 	set is          [expr double($cnt) / $total_cnt ]
 	set is_pc       [expr double(round($is  * 100000)) / 1000]
 	set opt_pc      [expr double(round($opt * 100000)) / 1000]