diff --git a/project/bldb/src/main/java/com/fe/svn/SVNSyncFile.java b/project/bldb/src/main/java/com/fe/svn/SVNSyncFile.java
index fdb5876..2ae5884 100644
--- a/project/bldb/src/main/java/com/fe/svn/SVNSyncFile.java
+++ b/project/bldb/src/main/java/com/fe/svn/SVNSyncFile.java
@@ -340,12 +340,12 @@ private Logger log = LogManager.getLogger(SVNSync4RFunction.class.getName());
 	
 	public Long firstRevision(String function_name) throws Exception {
 		TreeSet<Long> rev=revisions(function_name);
-		return rev.size()>0?rev.first():0;
+		return rev.size()>0?rev.first():0L;
 	}
 	
 	public Long lastRevision(String function_name) throws Exception {
 		TreeSet<Long> rev=revisions(function_name);
-		return rev.size()>0?rev.last():0;
+		return rev.size()>0?rev.last():0L;
 	}
 	
 	public String getWhatChanged(String function_name, Long c_rev) throws Exception {