diff --git a/src/GitList/Git/Repository.php b/src/GitList/Git/Repository.php
index 8334bc3..732c684 100644
--- a/src/GitList/Git/Repository.php
+++ b/src/GitList/Git/Repository.php
@@ -243,7 +243,7 @@ class Repository extends BaseRepository
         $query = escapeshellarg($query);
         $query = strtr($query, array('[' => '\\[', ']' => '\\]'));
         $command =
-              "log --grep={$query} --pretty=format:\"<item><hash>%H</hash>"
+              "log --grep={$query} -i --pretty=format:\"<item><hash>%H</hash>"
             . "<short_hash>%h</short_hash><tree>%T</tree><parents>%P</parents>"
             . "<author>%an</author><author_email>%ae</author_email>"
             . "<date>%at</date><commiter>%cn</commiter>"
@@ -271,7 +271,7 @@ class Repository extends BaseRepository
         $query = escapeshellarg($query);
 
         try {
-            $results = $this->getClient()->run($this, "grep -I --line-number {$query} $branch");
+            $results = $this->getClient()->run($this, "grep -i --line-number {$query} $branch");
         } catch (\RuntimeException $e) {
             return false;
         }