diff --git a/rich_snippets.apachesolr_legacy.inc b/rich_snippets.apachesolr_legacy.inc
index edbb675..4177b49 100644
--- a/rich_snippets.apachesolr_legacy.inc
+++ b/rich_snippets.apachesolr_legacy.inc
@@ -118,5 +118,8 @@ function apachesolr_get_index_key_map($entity_type) {
     }
   }
 
-  return $index_key_map[$entity_type];
+  if (isset($index_key_map[$entity_type])) {
+    return $index_key_map[$entity_type];
+  }
+  return false;
 }
diff --git a/rich_snippets.module b/rich_snippets.module
index 35ffa14..25002e7 100644
--- a/rich_snippets.module
+++ b/rich_snippets.module
@@ -333,9 +333,11 @@ function rich_snippets_get_schema_from_predicates(array $rdf_mapping, $field_nam
  */
 function rich_snippets_get_result_schema($entity_type, $bundle) {
   $mapping = rdf_mapping_load($entity_type, $bundle);
-  foreach ($mapping['rdftype'] as $typeof) {
-    if (0 === strpos($typeof, 'schema:')) {
-      return substr($typeof, 7);
+  if (isset($mapping['rdftype']) && !empty($mapping['rdftype'])) {
+    foreach ($mapping['rdftype'] as $typeof) {
+      if (0 === strpos($typeof, 'schema:')) {
+        return substr($typeof, 7);
+      }
     }
   }
   return FALSE;
diff --git a/rich_snippets.preprocess.inc b/rich_snippets.preprocess.inc
index ad8d3c6..afec902 100644
--- a/rich_snippets.preprocess.inc
+++ b/rich_snippets.preprocess.inc
@@ -14,13 +14,16 @@
 function rich_snippets_default_preprocessor(&$variables) {
 
   // Build the date, remove it from search info.
-  $date = theme('rich_snippets_date', array('date' => $variables['result']['date']));
-  $variables['snippet'] = $date . ' ' . $variables['snippet'];
-  unset($variables['info_split']['date']);
-
+  if (isset($variables['result']['date'])) {
+    $date = theme('rich_snippets_date', array('date' => $variables['result']['date']));
+    $variables['snippet'] = $date . ' ' . $variables['snippet'];
+    unset($variables['info_split']['date']);
+  }
   // Re-format the author info.
-  $user_args = array('!user' => $variables['info_split']['user']);
-  $variables['info_split']['user'] = t('By !user', $user_args);
+  if (isset($variables['info_split']['user'])) {
+    $user_args = array('!user' => $variables['info_split']['user']);
+    $variables['info_split']['user'] = t('By !user', $user_args);
+  }
 }
 
 /**