diff --git a/app/lib/pages/heatmap_page.dart b/app/lib/pages/heatmap_page.dart
index 29ce240..fbf3a2e 100644
--- a/app/lib/pages/heatmap_page.dart
+++ b/app/lib/pages/heatmap_page.dart
@@ -146,7 +146,7 @@ class _LegendCard extends StatelessWidget {
         children: [
           Text('Legende', style: t.headlineSmall),
           const SizedBox(height: ReclaimSpace.md),
-          _LegendRow(
+          const _LegendRow(
             symbol: '↔',
             axis: 'Abszisse (X)',
             label: 'Schaden',
@@ -157,7 +157,7 @@ class _LegendCard extends StatelessWidget {
                 'P × F × T × h (Studie §3.1).',
           ),
           const SizedBox(height: ReclaimSpace.sm),
-          _LegendRow(
+          const _LegendRow(
             symbol: '↕',
             axis: 'Ordinate (Y)',
             label: 'Nutzen',
@@ -169,7 +169,7 @@ class _LegendCard extends StatelessWidget {
                 'quellen-begründet.',
           ),
           const SizedBox(height: ReclaimSpace.sm),
-          _LegendRow(
+          const _LegendRow(
             symbol: '●',
             axis: 'Punktgröße',
             label: 'Betroffenheit',
@@ -180,7 +180,7 @@ class _LegendCard extends StatelessWidget {
                 'IHK-/Handwerkskammer-Mitgliederzahlen.',
           ),
           const SizedBox(height: ReclaimSpace.sm),
-          _LegendRow(
+          const _LegendRow(
             symbol: '◐',
             axis: 'Farb-Kante',
             label: 'Evidenz-Stufe',