diff --git a/client/src/components/Header.tsx b/client/src/components/Header.tsx
index 168f83f..caa361c 100644
--- a/client/src/components/Header.tsx
+++ b/client/src/components/Header.tsx
@@ -63,7 +63,7 @@ export default function Header() {
                     const weight = (2 ** order) % 11;
                     sum += Number.parseInt(char) * weight
                 }
-                if (sum % 11 != 0) {
+                if (sum % 11 !== 0) {
                     throw Error("Číslo účtu je neplatné")
                 }
             } catch (e) {