1 files changed, 1 insertions, 1 deletions
diff --git a/src/php/lib/Grpc/AbstractSurfaceActiveCall.php b/src/php/lib/Grpc/AbstractSurfaceActiveCall.php
index 53c7d4cd1a..83e4719c9a 100755
--- a/src/php/lib/Grpc/AbstractSurfaceActiveCall.php
+++ b/src/php/lib/Grpc/AbstractSurfaceActiveCall.php
@@ -44,7 +44,7 @@ abstract class AbstractSurfaceActiveCall {
 
   protected function _read() {
     $response = $this->active_call->read();
-    if ($response == null) {
+    if ($response === null) {
       return null;
     }
     return call_user_func($this->deserialize, $response);