diff --git a/src/main/java/com/ai/da/python/PythonService.java b/src/main/java/com/ai/da/python/PythonService.java
index 60b912b2..94cf664b 100644
--- a/src/main/java/com/ai/da/python/PythonService.java
+++ b/src/main/java/com/ai/da/python/PythonService.java
@@ -307,7 +307,7 @@ public class PythonService {
                 sketchNumbers[2] = 8 - sketchNumbers[0] - sketchNumbers[1];
             }
             if (sketchNumbers[2] > 0 && sketchNumbers[1] > 0) {
-                Long l = RandomsUtil.randomSysFile(0l, 1l);
+                Long l = RandomsUtil.randomSysFile(0l, 2l);
                 if (l == 0l) {
                     return CurrentDesignPictureTypeEnum.NO_PIN;
                 }else {