diff --git a/lib/private/util.php b/lib/private/util.php
index bf7f39ebb2058e0097a62395b0da740859a6475c..306e37b947841cd43fda6803016ebca37c407265 100755
--- a/lib/private/util.php
+++ b/lib/private/util.php
@@ -516,6 +516,12 @@ class OC_Util {
 			);
 			$webServerRestart = true;
 		}
+		if (!self::isAnnotationsWorking()) {
+			$errors[] = array(
+				'error'=>'PHP is apparently setup to strip inline doc blocks. This will make several core apps inaccessible.',
+				'hint'=>'This is probably caused by a cache/accelerator such as Zend OPcache or eAccelerator.'
+			);
+		}
 
 		if($webServerRestart) {
 			$errors[] = array(
@@ -995,6 +1001,18 @@ class OC_Util {
 		return true;
 	}
 
+	/**
+	 * Check if it's possible to get the inline annotations
+	 *
+	 * @return bool
+	 */
+	public static function isAnnotationsWorking() {
+		$reflection = new \ReflectionMethod(__METHOD__);
+		$docs = $reflection->getDocComment();
+
+		return (is_string($docs) && strlen($docs) > 50);
+	}
+
 	/**
 	 * Check if the PHP module fileinfo is loaded.
 	 * @return bool
diff --git a/settings/admin.php b/settings/admin.php
index 699ba97edd5ed5a713b73766699efd0fc4f0844c..a0769892ef44d553b9368ab65dc520c9f913918b 100755
--- a/settings/admin.php
+++ b/settings/admin.php
@@ -39,6 +39,7 @@ $tmpl->assign('entriesremain', $entriesremain);
 $tmpl->assign('htaccessworking', $htaccessworking);
 $tmpl->assign('internetconnectionworking', OC_Util::isInternetConnectionEnabled() ? OC_Util::isInternetConnectionWorking() : false);
 $tmpl->assign('isLocaleWorking', OC_Util::isSetLocaleWorking());
+$tmpl->assign('isAnnotationsWorking', OC_Util::isAnnotationsWorking());
 $tmpl->assign('isWebDavWorking', OC_Util::isWebDAVWorking());
 $tmpl->assign('has_fileinfo', OC_Util::fileInfoLoaded());
 $tmpl->assign('old_php', OC_Util::isPHPoutdated());
diff --git a/settings/templates/admin.php b/settings/templates/admin.php
index 4b25128c30b39e2e3089e504a172cc2346895e24..a86fe9c0ac7feeb9e39e4a507f86bdf371867dd9 100644
--- a/settings/templates/admin.php
+++ b/settings/templates/admin.php
@@ -83,6 +83,21 @@ if (!$_['isWebDavWorking']) {
 <?php
 }
 
+// Are doc blocks accessible?
+if (!$_['isAnnotationsWorking']) {
+	?>
+<div class="section">
+	<h2><?php p($l->t('Setup Warning'));?></h2>
+
+	<span class="securitywarning">
+		<?php p($l->t('PHP is apparently setup to strip inline doc blocks. This will make several core apps inaccessible.')); ?>
+		<?php p($l->t('This is probably caused by a cache/accelerator such as Zend OPcache or eAccelerator.')); ?>
+	</span>
+
+</div>
+<?php
+}
+
 // if module fileinfo available?
 if (!$_['has_fileinfo']) {
 	?>