diff --git a/src/client/nexus-exam/nexus-exam.go b/src/client/nexus-exam/nexus-exam.go
index 4c02f26cf55d9c7833bccac35094df3b658340fc..9cd203c395f8079cf13da874dd6f36788c51e73f 100644
--- a/src/client/nexus-exam/nexus-exam.go
+++ b/src/client/nexus-exam/nexus-exam.go
@@ -154,7 +154,7 @@ func refreshToken(parent fyne.Window) {
             u.Println(time.Now(), ": successfully refreshed token")
         }
         token = refreshedToken
-        time.Sleep(30*time.Second)
+        time.Sleep(1*time.Hour)
     }
 }