diff --git a/system/languages/en.yaml b/system/languages/en.yaml
index 5ae01dbde..a1eab6f19 100644
--- a/system/languages/en.yaml
+++ b/system/languages/en.yaml
@@ -92,3 +92,6 @@ NICETIME:
     MO_PLURAL: mos
     YR_PLURAL: yrs
     DEC_PLURAL: decs
+FORM:
+    VALIDATION_FAIL: <b>Validation failed:</b>
+    INVALID_INPUT: Invalid input in
diff --git a/system/src/Grav/Common/Data/Blueprint.php b/system/src/Grav/Common/Data/Blueprint.php
index bf1f5a32f..9bfc32303 100644
--- a/system/src/Grav/Common/Data/Blueprint.php
+++ b/system/src/Grav/Common/Data/Blueprint.php
@@ -77,7 +77,8 @@ class Blueprint
             $this->validateArray($data, $this->nested);
         } catch (\RuntimeException $e) {
             $language = self::getGrav()['language'];
-            throw new \RuntimeException(sprintf('<b>Validation failed:</b> %s', $language->translate($e->getMessage())));
+            $message = sprintf($language->translate('FORM.VALIDATION_FAIL', null, true) . ' %s', $e->getMessage());
+            throw new \RuntimeException($message);
         }
     }
 
diff --git a/system/src/Grav/Common/Data/Validation.php b/system/src/Grav/Common/Data/Validation.php
index 653386fe9..c232467ba 100644
--- a/system/src/Grav/Common/Data/Validation.php
+++ b/system/src/Grav/Common/Data/Validation.php
@@ -38,7 +38,7 @@ class Validation
         $type = (string) isset($field['validate']['type']) ? $field['validate']['type'] : $field['type'];
         $method = 'type'.strtr($type, '-', '_');
         $name = ucfirst(isset($field['label']) ? $field['label'] : $field['name']);
-        $message = (string) isset($field['validate']['message']) ? $field['validate']['message'] : 'Invalid input in "' . $language->translate($name) . '""';
+        $message = (string) isset($field['validate']['message']) ? $field['validate']['message'] : $language->translate('FORM.INVALID_INPUT', null, true) . ' "' . $language->translate($name) . '"';
 
         if (method_exists(__CLASS__, $method)) {
             $success = self::$method($value, $validate, $field);