diff --git a/src/dashboard/templates.py b/src/dashboard/templates.py
index ebed653..aabd8a6 100644
--- a/src/dashboard/templates.py
+++ b/src/dashboard/templates.py
@@ -633,7 +633,7 @@ DASHBOARD_HTML = """
                 <div class="config-section">
                     <h3>Protocol Mappings</h3>
                     <div class="action-buttons">
-                        <button onclick="loadProtocolMappings()">Refresh Mappings</button>
+                        <button onclick="loadAllSignals()">Refresh Mappings</button>
                         <button onclick="showAddMappingModal()" style="background: #28a745;">Add New Mapping</button>
                         <button onclick="exportProtocolMappings()">Export to CSV</button>
                     </div>