diff --git a/src/LaunchDarkly/FeatureFlag.php b/src/LaunchDarkly/FeatureFlag.php
index b20ced40b..ff122534d 100644
--- a/src/LaunchDarkly/FeatureFlag.php
+++ b/src/LaunchDarkly/FeatureFlag.php
@@ -88,7 +88,7 @@ public function evaluate($user, $featureRequester) {
         }
         if ($this->isOn()) {
             $result = $this->_evaluate($user, $featureRequester, $prereqEvents);
-            if ($result != null) {
+            if ($result !== null) {
                 return new EvalResult($result, $prereqEvents);
             }
         }
diff --git a/src/LaunchDarkly/LDClient.php b/src/LaunchDarkly/LDClient.php
index 507b65ab0..f4d4201e3 100644
--- a/src/LaunchDarkly/LDClient.php
+++ b/src/LaunchDarkly/LDClient.php
@@ -131,7 +131,7 @@ public function variation($key, $user, $default = false) {
                     $this->_eventProcessor->enqueue($e);
                 }
             }
-            if ($evalResult->getValue() != null) {
+            if ($evalResult->getValue() !== null) {
                 $this->_sendFlagRequestEvent($key, $user, $evalResult->getValue(), $default, $flag->getVersion());
                 return $evalResult->getValue();
             }