diff --git a/uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/views/NumberButtonView.kt b/uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/views/NumberButtonView.kt
index b958dae8b..d0d705fb3 100644
--- a/uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/views/NumberButtonView.kt
+++ b/uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/views/NumberButtonView.kt
@@ -29,7 +29,8 @@ import android.view.View
 import android.view.View.OnClickListener
 import android.view.View.OnLongClickListener
 import org.isoron.uhabits.R
-import org.isoron.uhabits.core.models.NumericalHabitType
+import org.isoron.uhabits.core.models.NumericalHabitType.AT_LEAST
+import org.isoron.uhabits.core.models.NumericalHabitType.AT_MOST
 import org.isoron.uhabits.core.preferences.Preferences
 import org.isoron.uhabits.inject.ActivityContext
 import org.isoron.uhabits.utils.InterfaceUtils.getDimension
@@ -37,7 +38,6 @@ import org.isoron.uhabits.utils.dim
 import org.isoron.uhabits.utils.drawNotesIndicator
 import org.isoron.uhabits.utils.getFontAwesome
 import org.isoron.uhabits.utils.sres
-import java.lang.Double.max
 import java.text.DecimalFormat
 import javax.inject.Inject
 
@@ -90,7 +90,7 @@ class NumberButtonView(
             invalidate()
         }
 
-    var targetType = NumericalHabitType.AT_LEAST
+    var targetType = AT_LEAST
         set(value) {
             field = value
             invalidate()
@@ -164,18 +164,11 @@ class NumberButtonView(
         }
 
         fun draw(canvas: Canvas) {
-            var activeColor = if (targetType == NumericalHabitType.AT_LEAST) {
-                when {
-                    value < 0.0 && preferences.areQuestionMarksEnabled -> lowContrast
-                    max(0.0, value) >= threshold -> color
-                    else -> mediumContrast
-                }
-            } else {
-                when {
-                    value < 0.0 && preferences.areQuestionMarksEnabled -> lowContrast
-                    value <= threshold -> color
-                    else -> mediumContrast
-                }
+            val activeColor = when {
+                value < 0.0 -> lowContrast
+                (targetType == AT_LEAST) && (value >= threshold) -> color
+                (targetType == AT_MOST) && (value <= threshold) -> color
+                else -> mediumContrast
             }
 
             val label: String
diff --git a/uhabits-core/src/jvmMain/java/org/isoron/uhabits/core/ui/screens/habits/show/views/HistoryCard.kt b/uhabits-core/src/jvmMain/java/org/isoron/uhabits/core/ui/screens/habits/show/views/HistoryCard.kt
index bc60ec398..de1820bbd 100644
--- a/uhabits-core/src/jvmMain/java/org/isoron/uhabits/core/ui/screens/habits/show/views/HistoryCard.kt
+++ b/uhabits-core/src/jvmMain/java/org/isoron/uhabits/core/ui/screens/habits/show/views/HistoryCard.kt
@@ -29,16 +29,21 @@ import org.isoron.uhabits.core.models.Entry.Companion.YES_AUTO
 import org.isoron.uhabits.core.models.Entry.Companion.YES_MANUAL
 import org.isoron.uhabits.core.models.Habit
 import org.isoron.uhabits.core.models.HabitList
-import org.isoron.uhabits.core.models.NumericalHabitType
+import org.isoron.uhabits.core.models.NumericalHabitType.AT_LEAST
+import org.isoron.uhabits.core.models.NumericalHabitType.AT_MOST
 import org.isoron.uhabits.core.models.PaletteColor
 import org.isoron.uhabits.core.models.Timestamp
 import org.isoron.uhabits.core.preferences.Preferences
 import org.isoron.uhabits.core.ui.screens.habits.list.ListHabitsBehavior
 import org.isoron.uhabits.core.ui.views.HistoryChart
+import org.isoron.uhabits.core.ui.views.HistoryChart.Square.DIMMED
+import org.isoron.uhabits.core.ui.views.HistoryChart.Square.GREY
+import org.isoron.uhabits.core.ui.views.HistoryChart.Square.HATCHED
+import org.isoron.uhabits.core.ui.views.HistoryChart.Square.OFF
+import org.isoron.uhabits.core.ui.views.HistoryChart.Square.ON
 import org.isoron.uhabits.core.ui.views.OnDateClickedListener
 import org.isoron.uhabits.core.ui.views.Theme
 import org.isoron.uhabits.core.utils.DateUtils
-import kotlin.math.max
 import kotlin.math.roundToInt
 
 data class HistoryCardState(
@@ -146,36 +151,24 @@ class HistoryCardPresenter(
             val oldest = habit.computedEntries.getKnown().lastOrNull()?.timestamp ?: today
             val entries = habit.computedEntries.getByInterval(oldest, today)
             val series = if (habit.isNumerical) {
-                if (habit.targetType == NumericalHabitType.AT_LEAST) {
-                    entries.map {
-                        when (max(0, it.value)) {
-                            0 -> HistoryChart.Square.OFF
-                            else -> HistoryChart.Square.ON
-                        }
-                    }
-                } else {
-                    entries.map {
-                        when {
-                            max(0.0, it.value / 1000.0) <= habit.targetValue -> HistoryChart.Square.ON
-                            else -> HistoryChart.Square.OFF
-                        }
+                entries.map {
+                    when {
+                        it.value == Entry.UNKNOWN -> OFF
+                        (habit.targetType == AT_MOST) && (it.value / 1000.0 <= habit.targetValue) -> ON
+                        (habit.targetType == AT_LEAST) && (it.value / 1000.0 >= habit.targetValue) -> ON
+                        else -> GREY
                     }
                 }
             } else {
                 entries.map {
                     when (it.value) {
-                        YES_MANUAL -> HistoryChart.Square.ON
-                        YES_AUTO -> HistoryChart.Square.DIMMED
-                        SKIP -> HistoryChart.Square.HATCHED
-                        else -> HistoryChart.Square.OFF
+                        YES_MANUAL -> ON
+                        YES_AUTO -> DIMMED
+                        SKIP -> HATCHED
+                        else -> OFF
                     }
                 }
             }
-            val defaultSquare = if (habit.isNumerical && habit.targetType == NumericalHabitType.AT_MOST)
-                HistoryChart.Square.ON
-            else
-                HistoryChart.Square.OFF
-
             val notesIndicators = entries.map {
                 when (it.notes) {
                     "" -> false
@@ -189,7 +182,7 @@ class HistoryCardPresenter(
                 today = today.toLocalDate(),
                 theme = theme,
                 series = series,
-                defaultSquare = defaultSquare,
+                defaultSquare = OFF,
                 notesIndicators = notesIndicators,
             )
         }
diff --git a/uhabits-core/src/jvmMain/java/org/isoron/uhabits/core/ui/views/HistoryChart.kt b/uhabits-core/src/jvmMain/java/org/isoron/uhabits/core/ui/views/HistoryChart.kt
index afdc5d3b0..efd7737c5 100644
--- a/uhabits-core/src/jvmMain/java/org/isoron/uhabits/core/ui/views/HistoryChart.kt
+++ b/uhabits-core/src/jvmMain/java/org/isoron/uhabits/core/ui/views/HistoryChart.kt
@@ -53,6 +53,7 @@ class HistoryChart(
     enum class Square {
         ON,
         OFF,
+        GREY,
         DIMMED,
         HATCHED,
     }
@@ -216,6 +217,9 @@ class HistoryChart(
             Square.OFF -> {
                 theme.lowContrastTextColor
             }
+            Square.GREY -> {
+                theme.mediumContrastTextColor
+            }
             Square.DIMMED, Square.HATCHED -> {
                 color.blendWith(theme.cardBackgroundColor, 0.5)
             }
@@ -254,7 +258,7 @@ class HistoryChart(
 
         if (hasNotes) {
             circleColor = when (value) {
-                Square.ON -> theme.lowContrastTextColor
+                Square.ON, Square.GREY -> theme.lowContrastTextColor
                 else -> color
             }
             canvas.setColor(circleColor)