diff --git a/pages/index.vue b/pages/index.vue
index 46c46f18..bfec7e08 100644
--- a/pages/index.vue
+++ b/pages/index.vue
@@ -463,7 +463,7 @@
                     <input
                       :placeholder="$t('value_count', { count: index + 1 })"
                       :name="'value' + index"
-                      :value="param.value"
+                      :value="decodeURI(param.value)"
                       @change="
                         $store.commit('setValueParams', {
                           index,
diff --git a/store/mutations.js b/store/mutations.js
index 1f637cd7..dfa4aa08 100644
--- a/store/mutations.js
+++ b/store/mutations.js
@@ -58,7 +58,7 @@ export default {
   },
 
   setValueParams({ request }, { index, value }) {
-    request.params[index].value = value
+    request.params[index].value = encodeURI(value)
   },
 
   setTypeParams({ request }, { index, value }) {