diff --git a/public/react/src/modules/courses/coursesPublic/Addcourses.js b/public/react/src/modules/courses/coursesPublic/Addcourses.js
index 886ba2a0e..914a82c6d 100644
--- a/public/react/src/modules/courses/coursesPublic/Addcourses.js
+++ b/public/react/src/modules/courses/coursesPublic/Addcourses.js
@@ -89,6 +89,7 @@ class Addcourses extends Component{
       })
     }else{
       this.setState({
+        professor:null,
         assistant_professor:null,
         Checkboxteacherchecked:e.target.checked,
         Checkboxteachingtype:false