diff --git a/cmd/loginhelper/pages/cookies.html b/cmd/loginhelper/pages/cookies.html
index de9b13e..c930e15 100644
--- a/cmd/loginhelper/pages/cookies.html
+++ b/cmd/loginhelper/pages/cookies.html
@@ -35,7 +35,7 @@
     </style>
 </head>
 <body>
-    <form onsubmit="saveToCookies()">
+    <form onsubmit="event.preventDefault();saveToCookies()">
         <div>
             <label for="username">Username:</label>
             <input type="text" id="username" placeholder="Username"/>
diff --git a/cmd/loginhelper/pages/daw_submit.html b/cmd/loginhelper/pages/daw_submit.html
index b6e13c0..d057773 100644
--- a/cmd/loginhelper/pages/daw_submit.html
+++ b/cmd/loginhelper/pages/daw_submit.html
@@ -43,7 +43,7 @@
     </style>
 </head>
 <body>
-    <form onsubmit="submitToWaiter()">
+    <form onsubmit="event.preventDefault();submitToWaiter()">
         <div>
             <label for="reqid">Request ID:</label>
             <input type="text" id="reqid" oninput="this.value = normalizeCrockfordBase32(this.value)"
diff --git a/cmd/loginhelper/pages/localstorage.html b/cmd/loginhelper/pages/localstorage.html
index 92bb1e6..b46e2a6 100644
--- a/cmd/loginhelper/pages/localstorage.html
+++ b/cmd/loginhelper/pages/localstorage.html
@@ -25,7 +25,7 @@
     </style>
 </head>
 <body>
-    <form onsubmit="saveToLocalstorage()">
+    <form onsubmit="event.preventDefault();saveToLocalstorage()">
         <div>
             <label for="username">Username:</label>
             <input type="text" id="username" placeholder="Username"/>
