diff --git a/js/index.js b/js/index.js
index 5e175cb..1049766 100644
--- a/js/index.js
+++ b/js/index.js
@@ -128,28 +128,38 @@ validatePurpose = (target) => {
 }
 
 document.querySelector("#name input").addEventListener("input", (event) => {
-  validateName(event.target);
-  regenerate();
+  if (event.target.value.length > 0) {
+    validateName(event.target);
+    regenerate();
+  }
 });
 
 document.querySelector("#iban input").addEventListener("input", (event) => {
-  validateIban(event.target);
-  regenerate();
+  if (event.target.value.length > 0) {
+    validateIban(event.target);
+    regenerate();
+  }
 });
 
 document.querySelector("#bic input").addEventListener("input", (event) => {
-  validateBic(event.target);
-  regenerate();
+  if (event.target.value.length > 0) {
+    validateBic(event.target);
+    regenerate();
+  }
 });
 
 document.querySelector("#amount input").addEventListener("input", (event) => {
-  validateAmount(event.target);
-  regenerate();
+  if (event.target.value.length > 0) {
+    validateAmount(event.target);
+    regenerate();
+  }
 });
 
 document.querySelector("#purpose input").addEventListener("input", (event) => {
-  validatePurpose(event.target);
-  regenerate();
+  if (event.target.value.length > 0) {
+    validatePurpose(event.target);
+    regenerate();
+  }
 });
 
 // Remember inputs