diff --git a/inc/raml.php b/inc/raml.php
index 5ddfb0b..1bdd5fd 100644
--- a/inc/raml.php
+++ b/inc/raml.php
@@ -157,7 +157,7 @@ public function generatePathData($key, $value) {
 				$this->paths[$key]->addChild($this->formatParentPath($key) . $skey, $skey);
 				$this->generatePathData($this->formatParentPath($key) . $skey, $svalue);
 				unset($value[$skey]);
-			} elseif ($skey == 'is') {
+			} elseif ($skey === 'is') {
 				if (is_array($svalue)) {
 					foreach($svalue as $ivalue) {
 						if (!isset($value[$ivalue])) {