diff --git a/src/main/java/org/codelibs/fess/app/web/error/ErrorForm.java b/src/main/java/org/codelibs/fess/app/web/error/ErrorForm.java
index 0cfd2c66d..4a1781558 100644
--- a/src/main/java/org/codelibs/fess/app/web/error/ErrorForm.java
+++ b/src/main/java/org/codelibs/fess/app/web/error/ErrorForm.java
@@ -25,7 +25,7 @@ public class ErrorForm implements Serializable {
 
     public Map<String, String[]> fields = new HashMap<>();
 
-    public String query;
+    public String q;
 
     public String url;