diff --git a/routers/web/repo/compare.go b/routers/web/repo/compare.go
index fd5050792889..f6eb2ef8ebe7 100644
--- a/routers/web/repo/compare.go
+++ b/routers/web/repo/compare.go
@@ -221,19 +221,13 @@ func ParseCompareInfo(ctx *context.Context) *CompareInfo {
 	} else {
 		infos = strings.SplitN(infoPath, "...", 2)
 		if len(infos) != 2 {
-			infos = []string{baseRepo.DefaultBranch, infoPath}
-			if strings.Contains(infoPath, "..") {
-				infos = strings.SplitN(infoPath, "..", 2)
+			if infos = strings.SplitN(infoPath, "..", 2); len(infos) == 2 {
 				ci.DirectComparison = true
 				ctx.Data["PageIsComparePull"] = false
+			} else {
+				infos = []string{baseRepo.DefaultBranch, infoPath}
 			}
 		}
-
-		if len(infos) != 2 {
-			log.Trace("ParseCompareInfo[%d]: not enough compared branches information %s", baseRepo.ID, infos)
-			ctx.NotFound("CompareAndPullRequest", nil)
-			return nil
-		}
 	}
 
 	ctx.Data["BaseName"] = baseRepo.OwnerName