diff --git a/doc/doc-server/src/main/java/cn/axzo/nanopart/doc/file/index/IndexQueryService.java b/doc/doc-server/src/main/java/cn/axzo/nanopart/doc/file/index/IndexQueryService.java
index accf6661..d3841d41 100644
--- a/doc/doc-server/src/main/java/cn/axzo/nanopart/doc/file/index/IndexQueryService.java
+++ b/doc/doc-server/src/main/java/cn/axzo/nanopart/doc/file/index/IndexQueryService.java
@@ -16,7 +16,6 @@ import com.baomidou.mybatisplus.core.metadata.IPage;
 
 import cn.axzo.nanopart.doc.api.domain.IndexNodeParentScope;
 import cn.axzo.nanopart.doc.api.domain.IndexNodeScope;
-import cn.axzo.nanopart.doc.api.enums.FileFormat;
 import cn.axzo.nanopart.doc.api.enums.IndexNodeState;
 import cn.axzo.nanopart.doc.api.enums.IndexNodeType;
 import cn.axzo.nanopart.doc.api.index.request.IndexNodeSearchRequest;
@@ -41,7 +40,7 @@ public class IndexQueryService {
 		List<IndexNode> indexNodes = indexNodeDao.scopeQuery(nodeScope) //
 				.eq(IndexNode::getState, IndexNodeState.VALID) //
 				.list();
-		setIcons(indexNodes);
+		maybeSetDefaultIcons(indexNodes);
 		return indexNodes;
 	}
 
@@ -51,7 +50,7 @@ public class IndexQueryService {
 				.like(IndexNode::getName, search.getName()) //
 				.in(CollectionUtils.isNotEmpty(search.getNodeTypes()), IndexNode::getNodeType, search.getNodeTypes()) //
 				.page(search.toPage());
-		setIcons(page.getRecords());
+		maybeSetDefaultIcons(page.getRecords());
 		return Page.toPage(page.getPages(), page.getSize(), page.getTotal(), page.getRecords());
 	}
 
@@ -94,7 +93,7 @@ public class IndexQueryService {
 		return indexNodeDao.lambdaQuery().in(IndexNode::getCode, codes).list();
 	}
 
-	private void setIcons(List<IndexNode> indexNodes) {
+	private void maybeSetDefaultIcons(List<IndexNode> indexNodes) {
 		for (IndexNode indexNode : indexNodes) {
 			if (StringUtils.isBlank(indexNode.getIcon()))
 				indexNode.setIcon(determineDefaultIcon(indexNode));