diff --git a/pytec/tec_qt.ui b/pytec/tec_qt.ui
index 0557111..bc97494 100644
--- a/pytec/tec_qt.ui
+++ b/pytec/tec_qt.ui
@@ -573,6 +573,9 @@
                     <height>0</height>
                    </size>
                   </property>
+                  <property name="minimum">
+                   <number>1</number>
+                  </property>
                   <property name="maximum">
                    <number>100</number>
                   </property>
diff --git a/pytec/ui_tec_qt.py b/pytec/ui_tec_qt.py
index bc06921..63fe098 100644
--- a/pytec/ui_tec_qt.py
+++ b/pytec/ui_tec_qt.py
@@ -252,6 +252,7 @@ class Ui_MainWindow(object):
         self.fan_power_slider.setMinimumSize(QtCore.QSize(200, 0))
         self.fan_power_slider.setMaximumSize(QtCore.QSize(200, 16777215))
         self.fan_power_slider.setBaseSize(QtCore.QSize(200, 0))
+        self.fan_power_slider.setMinimum(1)
         self.fan_power_slider.setMaximum(100)
         self.fan_power_slider.setOrientation(QtCore.Qt.Orientation.Horizontal)
         self.fan_power_slider.setObjectName("fan_power_slider")