diff --git a/h5p.classes.php b/h5p.classes.php
index 1373f2f..2f883ce 100644
--- a/h5p.classes.php
+++ b/h5p.classes.php
@@ -364,12 +364,12 @@ class h5pValidator {
       // The requirement is a regexp, match it against the data
       if (is_string($h5pData) || is_int($h5pData)) {
         if (preg_match($requirement, $h5pData) === 0) {
-           $this->h5pF->setErrorMessage($this->h5pF->t("Ivalid data provided for %property in %library", array('%property' => $property_name, '%library' => $library_name)));
+           $this->h5pF->setErrorMessage($this->h5pF->t("Invalid data provided for %property in %library", array('%property' => $property_name, '%library' => $library_name)));
            $valid = FALSE;
         }
       }
       else {
-        $this->h5pF->setErrorMessage($this->h5pF->t("Ivalid data provided for %property in %library", array('%property' => $property_name, '%library' => $library_name)));
+        $this->h5pF->setErrorMessage($this->h5pF->t("Invalid data provided for %property in %library", array('%property' => $property_name, '%library' => $library_name)));
         $valid = FALSE;
       }
     }