diff --git a/apps/ui/templates/device.html b/apps/ui/templates/device.html
index b7f8a96..1baaafe 100644
--- a/apps/ui/templates/device.html
+++ b/apps/ui/templates/device.html
@@ -471,11 +471,11 @@
             stateGrid.className = 'state-grid';
             stateGrid.innerHTML = `
                 <div class="state-item">
-                    <div class="state-value" id="current-temp">${deviceState.current_temp?.toFixed(1) || '--'}°C</div>
+                    <div class="state-value" id="current-temp">${deviceState.current?.toFixed(1) || '--'}°C</div>
                     <div class="state-label">Aktuell</div>
                 </div>
                 <div class="state-item">
-                    <div class="state-value" id="target-temp">${deviceState.target_temp?.toFixed(1) || '--'}°C</div>
+                    <div class="state-value" id="target-temp">${deviceState.target?.toFixed(1) || '--'}°C</div>
                     <div class="state-label">Ziel</div>
                 </div>
             `;
@@ -488,8 +488,8 @@
             sliderGroup.innerHTML = `
                 <label class="control-label">Zieltemperatur</label>
                 <div class="slider-container">
-                    <input type="range" class="slider" id="temp-slider" min="5" max="30" step="0.5" value="${deviceState.target_temp || 21}">
-                    <div class="slider-value" id="temp-value">${deviceState.target_temp?.toFixed(1) || '21.0'}°C</div>
+                    <input type="range" class="slider" id="temp-slider" min="5" max="30" step="0.5" value="${deviceState.target || 21}">
+                    <div class="slider-value" id="temp-value">${deviceState.target?.toFixed(1) || '21.0'}°C</div>
                 </div>
             `;
             card.appendChild(sliderGroup);