diff --git a/routers/web/repo/pull.go b/routers/web/repo/pull.go
index d64e9a57bb075..0f1491ae80939 100644
--- a/routers/web/repo/pull.go
+++ b/routers/web/repo/pull.go
@@ -637,7 +637,15 @@ func PrepareViewPullInfo(ctx *context.Context, issue *issues_model.Issue) *git.C
 	if pb != nil && pb.EnableStatusCheck {
 		ctx.Data["is_context_required"] = func(context string) bool {
 			for _, c := range pb.StatusCheckContexts {
-				if gp, err := glob.Compile(c); err == nil && gp.Match(context) {
+				if c == context {
+					return true
+				}
+				if gp, err := glob.Compile(c); err != nil {
+					// All newly created status_check_contexts are checked to ensure they are valid glob expressions before being stored in the database.
+					// But some old status_check_context created before glob was introduced may be invalid glob expressions.
+					// So log the error here for debugging.
+					log.Error("compile glob %q: %v", c, err)
+				} else if gp.Match(context) {
 					return true
 				}
 			}