diff --git a/kcms/nightcolor/package/contents/ui/main.qml b/kcms/nightcolor/package/contents/ui/main.qml
index ea1af104e..c06b3d83e 100644
--- a/kcms/nightcolor/package/contents/ui/main.qml
+++ b/kcms/nightcolor/package/contents/ui/main.qml
@@ -108,7 +108,7 @@ KCM.SimpleKCM {
             GridLayout {
                 Kirigami.FormData.label: i18n("Day color temperature:")
                 Kirigami.FormData.buddyFor: tempSliderDay
-                enabled: kcm.nightColorSettings.active
+                enabled: kcm.nightColorSettings.active && kcm.nightColorSettings.mode !== NightColorMode.Constant
 
                 columns: 4