diff --git a/app/src/main/java/org/nsh07/pomodoro/ui/statsScreen/components/visualizations.kt b/app/src/main/java/org/nsh07/pomodoro/ui/statsScreen/components/visualizations.kt
index a27ded3..e552996 100644
--- a/app/src/main/java/org/nsh07/pomodoro/ui/statsScreen/components/visualizations.kt
+++ b/app/src/main/java/org/nsh07/pomodoro/ui/statsScreen/components/visualizations.kt
@@ -72,19 +72,21 @@ fun VariableWidth1DHeatmap(
     ) {
         values.fastForEachIndexed { index, item ->
             if (item > 0L) {
-                val shape = when (index) {
-                    firstNonZeroIndex -> shapes.large.copy(
-                        topEnd = shapes.extraSmall.topEnd,
-                        bottomEnd = shapes.extraSmall.bottomEnd
-                    )
+                val shape =
+                    if (firstNonZeroIndex == lastNonZeroIndex) shapes.large
+                    else when (index) {
+                        firstNonZeroIndex -> shapes.large.copy(
+                            topEnd = shapes.extraSmall.topEnd,
+                            bottomEnd = shapes.extraSmall.bottomEnd
+                        )
 
-                    lastNonZeroIndex -> shapes.large.copy(
-                        topStart = shapes.extraSmall.topStart,
-                        bottomStart = shapes.extraSmall.bottomStart
-                    )
+                        lastNonZeroIndex -> shapes.large.copy(
+                            topStart = shapes.extraSmall.topStart,
+                            bottomStart = shapes.extraSmall.bottomStart
+                        )
 
-                    else -> shapes.extraSmall
-                }
+                        else -> shapes.extraSmall
+                    }
                 Spacer(
                     Modifier
                         .weight(item.toFloat())
diff --git a/app/src/main/java/org/nsh07/pomodoro/ui/statsScreen/screens/LastWeekScreen.kt b/app/src/main/java/org/nsh07/pomodoro/ui/statsScreen/screens/LastWeekScreen.kt
index adb64a6..f886975 100644
--- a/app/src/main/java/org/nsh07/pomodoro/ui/statsScreen/screens/LastWeekScreen.kt
+++ b/app/src/main/java/org/nsh07/pomodoro/ui/statsScreen/screens/LastWeekScreen.kt
@@ -204,11 +204,11 @@ fun SharedTransitionScope.LastWeekScreen(
 
             item {
                 Text(
-                    "Focus overview",
+                    stringResource(R.string.focus_overview),
                     style = typography.headlineSmall
                 )
                 Text(
-                    "Average focus durations at different times of the day",
+                    stringResource(R.string.focus_overview_desc),
                     style = typography.bodySmall,
                     color = colorScheme.onSurfaceVariant
                 )
@@ -249,11 +249,11 @@ fun SharedTransitionScope.LastWeekScreen(
 
             item {
                 Text(
-                    "Focus insights",
+                    stringResource(R.string.focus_insights),
                     style = typography.headlineSmall
                 )
                 Text(
-                    "Focus overview of each day of the past week",
+                    stringResource(R.string.focus_insights_desc),
                     style = typography.bodySmall,
                     color = colorScheme.onSurfaceVariant
                 )
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 24df1ec..0c421ae 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -114,4 +114,8 @@
     <string name="timer_reset_message">Timer reset</string>
     <string name="undo">Undo</string>
     <string name="focus_break_ratio">Focus-break ratio</string>
+    <string name="focus_overview">Focus overview</string>
+    <string name="focus_overview_desc">Average focus durations at different times of the day</string>
+    <string name="focus_insights">Focus insights</string>
+    <string name="focus_insights_desc">Focus overview of each day of the past week (click on each cell for more info)</string>
 </resources>
\ No newline at end of file