diff --git a/apps/web/Components/Calculation/config/elements-render/override.tsx b/apps/web/Components/Calculation/config/elements-render/override.tsx
index 36e0967..c1e2166 100644
--- a/apps/web/Components/Calculation/config/elements-render/override.tsx
+++ b/apps/web/Components/Calculation/config/elements-render/override.tsx
@@ -58,8 +58,8 @@ const overrideRender: Partial<Record<keyof typeof map, RenderProps>> = {
               loading={$process.has('Calculate') || $process.has('CreateKP')}
               disabled={
                 $process.has('LoadKP') ||
-                !$process.has('Unlimited') ||
-                ($process.has('Tarif') && hasErrors)
+                (!$process.has('Unlimited') && hasErrors) ||
+                $process.has('Tarif')
               }
             />
           </Container>
@@ -94,7 +94,11 @@ const overrideRender: Partial<Record<keyof typeof map, RenderProps>> = {
             <Element
               {...props}
               loading={$process.has('Calculate') || $process.has('CreateKP')}
-              disabled={$process.has('LoadKP') || (!$process.has('Unlimited') && hasErrors)}
+              disabled={
+                $process.has('LoadKP') ||
+                (!$process.has('Unlimited') && hasErrors) ||
+                $process.has('Tarif')
+              }
             />
           </Container>
         );