diff --git a/src/lib/components/impacts_view/test_cases_view/test_case_selected/graph/TestCaseGraph.svelte b/src/lib/components/impacts_view/test_cases_view/test_case_selected/graph/TestCaseGraph.svelte
index ed7802dc65cbb5fda07d693556d50a76231f5e80..3592bdb95985178063065c5abb0b085cfcffb34a 100644
--- a/src/lib/components/impacts_view/test_cases_view/test_case_selected/graph/TestCaseGraph.svelte
+++ b/src/lib/components/impacts_view/test_cases_view/test_case_selected/graph/TestCaseGraph.svelte
@@ -752,7 +752,7 @@
               variableCustomizations[key] =
                 variableCustomizations[
                   getVariableCustomizationName(
-                    variable.parent,
+                    variable.name,
                     row.calculationName,
                   )
                 ] ??
@@ -843,7 +843,7 @@
               variableCustomizations[key] =
                 variableCustomizations[
                   getVariableCustomizationName(
-                    variable.parent,
+                    variable.name,
                     row.calculationName,
                   )
                 ] ??
@@ -1006,6 +1006,7 @@
                               >
                                 {#each getCustomizations(groupName, row.calculationName) as customization}
                                   <button
+                                    aria-label="personnaliser l'apparence"
                                     class="h-10 w-10 rounded border-2 border-neutral-300 hover:border-blue-500"
                                     onclick={() => {
                                       variableCustomizations[
@@ -1061,6 +1062,7 @@
                             initialPlacement="top"
                           >
                             <button
+                              aria-labelledby="hide-show-tooltip-{variable.name}"
                               class="group h-full pl-0.5 pr-1"
                               onclick={() => {
                                 variableCustomizations[
@@ -1095,7 +1097,7 @@
                             </button>
                             {#snippet tooltip()}
                               <div
-                                id="hide-show-tooltip"
+                                id="hide-show-tooltip-{variable.name}"
                                 class="overflow-hidden rounded-lg bg-black px-2 py-1 text-sm text-white"
                                 title={isSelected ? "Cacher" : "Montrer"}
                               >