diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/types/coercion/CharacterType.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/types/coercion/CharacterType.java
index 2e661750551ab5..b6dc4c2214176b 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/types/coercion/CharacterType.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/types/coercion/CharacterType.java
@@ -26,13 +26,12 @@
  */
 public abstract class CharacterType extends PrimitiveType {
 
-    private static final int WIDTH = 16;
-
-    protected final int len;
-
     // When defining SQL schemas, users often tend to set the length of string
     // fields much longer than actually needed for storage.
     public static final int DEFAULT_SLOT_SIZE = 20;
+    private static final int WIDTH = 16;
+
+    protected final int len;
 
     public CharacterType(int len) {
         this.len = len;