diff --git a/src/jsx/class/students_loader.jsx b/src/jsx/class/students_loader.jsx
index be4a502..6c3221c 100644
--- a/src/jsx/class/students_loader.jsx
+++ b/src/jsx/class/students_loader.jsx
@@ -1,7 +1,4 @@
 export class Students_loader{
-    constructor(){
-
-    }
     static loadStudents(cl,cb){
         fetch('/data/class/'+cl+'/user.json')
         .then(response => response.json())
diff --git a/src/jsx/main.jsx b/src/jsx/main.jsx
index 9698a58..0399092 100644
--- a/src/jsx/main.jsx
+++ b/src/jsx/main.jsx
@@ -25,7 +25,7 @@ export class Main extends React.Component{
         console.log(e.target.value);
         var v = e.target.value;
         var me = this;
-        if(v!='-'){
+        if(v!=='-'){
             Students_loader.loadStudents(e.target.value,(data)=>{
                 console.log(data)
                 me.setState({students:[],stud_html:[]});
diff --git a/src/jsx/ui/student.jsx b/src/jsx/ui/student.jsx
index 29cd959..7ef08d8 100644
--- a/src/jsx/ui/student.jsx
+++ b/src/jsx/ui/student.jsx
@@ -28,7 +28,7 @@ export class Student extends React.Component{
         var c = "user chosen_"+this.state.num;
         return (
             <div className={c}>
-                <div className="user_img"><img src={this.state.img_url} onError={this.onErr}></img></div>
+                <div className="user_img"><img src={this.state.img_url} onError={this.onErr} alt=""></img></div>
                 <div className="username">{this.state.username}</div>
             </div>
         );