diff --git a/models/topic.go b/models/topic.go
index b8d3d9d85..397edd0c3 100644
--- a/models/topic.go
+++ b/models/topic.go
@@ -178,7 +178,7 @@ func (opts *FindTopicOptions) toConds() builder.Cond {
 	}
 
 	if opts.Keyword != "" {
-		cond = cond.And(builder.Like{"topic.name", opts.Keyword})
+		cond = cond.And(builder.Like{"topic.name", strings.ToLower(opts.Keyword)})
 	}
 
 	return cond