diff --git a/src/Form/IconSetForm.php b/src/Form/IconSetForm.php
index a20ae2f..2c63012 100644
--- a/src/Form/IconSetForm.php
+++ b/src/Form/IconSetForm.php
@@ -113,29 +113,39 @@ class IconSetForm extends EntityForm {
 
     $source = $form_state->getValue('source');
 
-    // The source field cannot be empty
-    if (empty($source)) {
-      $form_state->setErrorByName('source', $this->t('The source cannot be empty.'));
-    }
-
     // @See: http://php.net/manual/en/function.libxml-use-internal-errors.php
-    // Using libxml_use_internal_errors we can iterate into the errors generated
-    // by the $source loaded with simplexml_load_string.
     libxml_use_internal_errors(TRUE);
     $dom = simplexml_load_string($source);
-    if ($dom === FALSE || libxml_get_errors()) {
-      $form_state->setErrorByName('source', $this->t('The source have to be a valid svg.'));
-    }
+    // Array with LibXMLError objects if there are any errors in the buffer, or
+    // an empty array otherwise.
+    $svg_errors = libxml_get_errors();
 
-    // Check if the current SVG contain at least one valid symbol definition
-    $symbols = $dom->defs->symbol;
-    if (!count($symbols)) {
+    if ($dom === FALSE || $svg_errors) {
       $form_state->setErrorByName('source',
-        $this->t('The source have to contain at least one valid symbol.
-            Check if the "symbol" tags are inside the "defs" tag')
+        $this->t('The value of source has to be a valid xml string.')
       );
-    }
 
+      // Iterate over errors generated by an invalid svg source.
+      foreach ($svg_errors as $svg_error) {
+        $message = $this->t('%message [line %line, column %column]', [
+          '%message' => $svg_error->message,
+          '%line' => $svg_error->line,
+          '%column' => $svg_error->column
+        ]);
+
+        drupal_set_message($message, 'error');
+      }
+    }
+    else {
+      // Check if the current SVG contain at least one valid symbol definition.
+      $symbols = $dom->defs->symbol;
+      if (!count($symbols)) {
+        $form_state->setErrorByName('source',
+          $this->t('The source have to contain at least one valid symbol.
+            Check if there are any valid "symbol" tags inside the "defs" tag.')
+        );
+      }
+    }
   }