diff --git a/admin/user_management/user_form.php b/admin/user_management/user_form.php
index bcbfb8d..8c8d995 100644
--- a/admin/user_management/user_form.php
+++ b/admin/user_management/user_form.php
@@ -59,7 +59,7 @@ try {  // Try opening the SQL database connection
                 <!-- THIS DIV IS FOR INPUT -->
                 <div id="textInputArea">
                     <label for="username" class="inputLabel" >Username:</label>
-                    <input type="text" id="username" name="username" class="newLine" maxlength="30" oninput="usernameConfirm()" tabindex="1" pattern="[a-zA-Z0-9]*" required>
+                    <input type="text" id="username" name="username" class="newLine" maxlength="30" oninput="usernameConfirm()" tabindex="1" pattern="[a-zA-Z0-9-_\|.]*" required>
                     <p id="confirmUsername"></p>
                     <label for="password" class="inputLabel newLine">Password:</label>
                     <input type="password" id="password" name="password" minlength="6" oninput="checkPasswordRequirements()" required/>
diff --git a/user/create_account.php b/user/create_account.php
index 6edaa25..3d1438e 100644
--- a/user/create_account.php
+++ b/user/create_account.php
@@ -67,7 +67,7 @@ try {  // Try opening the SQL database connection
                 <!-- THIS DIV IS FOR INPUT -->
                 <div id="textInputArea">
                     <label for="username" class="inputLabel">Username:</label>
-                    <input type="text" id="username" name="username" class="newLine" maxlength="30" oninput="usernameConfirm()" tabindex="1" pattern="[a-zA-Z0-9]*" required>
+                    <input type="text" id="username" name="username" class="newLine" maxlength="30" oninput="usernameConfirm()" tabindex="1" pattern="[a-zA-Z0-9-_\|.]*" required>
                     <p id="confirmUsername"></p>
                     <label for="password" class="inputLabel">Password:</label>
                     <input type="password" id="password" name="password" required oninput="checkPasswordRequirements()" tabindex="1">