diff --git a/judgels-backends/judgels-server-app/src/main/java/judgels/michael/problem/programming/grading/config/GradingConfigForm.java b/judgels-backends/judgels-server-app/src/main/java/judgels/michael/problem/programming/grading/config/GradingConfigForm.java
index 63c368886..68e4eeb88 100644
--- a/judgels-backends/judgels-server-app/src/main/java/judgels/michael/problem/programming/grading/config/GradingConfigForm.java
+++ b/judgels-backends/judgels-server-app/src/main/java/judgels/michael/problem/programming/grading/config/GradingConfigForm.java
@@ -7,7 +7,7 @@
 import judgels.michael.template.HtmlForm;
 
 public class GradingConfigForm extends HtmlForm {
-    static final int DEFAULT_SUBTASK_COUNT = 10;
+    static final int DEFAULT_SUBTASK_COUNT = 12;
     static final String HELPER_NONE = "(none)";
 
     @FormParam("timeLimit")