diff --git a/e2e/availabilities.spec.ts b/e2e/availabilities.spec.ts
index 6203df7..ff43c45 100644
--- a/e2e/availabilities.spec.ts
+++ b/e2e/availabilities.spec.ts
@@ -8,9 +8,9 @@ test('create an availability', async ({ page }) => {
     await page.locator('.availability-edit button').first().click();
     await page.getByLabel('Total size').click();
 
-    const value = (Math.random() * 0.5);
+    const value = (Math.random() * 0.5) + 0.1;
 
-    await page.getByLabel('Total size').fill(value.toFixed(2));
+    await page.getByLabel('Total size').fill(value.toFixed(1));
     await page.getByLabel('Duration').click();
     await page.getByLabel('Duration').fill('30');
     await page.getByLabel('Min price').click();
diff --git a/src/components/Availability/availability.utils.ts b/src/components/Availability/availability.utils.ts
index 2e3ac42..50bf72f 100644
--- a/src/components/Availability/availability.utils.ts
+++ b/src/components/Availability/availability.utils.ts
@@ -48,7 +48,7 @@ export const AvailabilityUtils = {
     isValid: (
         availability: AvailabilityState,
         max: number
-    ) => availability.totalSize > 0 && availability.totalSize <= max
+    ) => availability.totalSize > 0 && availability.totalSize * AvailabilityUtils.unitValue(availability.totalSizeUnit) <= max
     ,
     toggle: <T>(arr: Array<T>, value: T) =>
         arr.includes(value) ? arr.filter(i => i !== value) : [...arr, value],