diff --git a/tests/AppTest.php b/tests/AppTest.php
index d987a4315..571d17ec1 100644
--- a/tests/AppTest.php
+++ b/tests/AppTest.php
@@ -1564,6 +1564,7 @@ public function testRun()
             $body .= $args[0];
             $this->__toString()->willReturn($body);
         });
+        $streamProphecy->read(1)->willReturn('_');
         $streamProphecy->read('11')->will(function () {
             $this->eof()->willReturn(true);
             return $this->reveal()->__toString();
@@ -1616,6 +1617,7 @@ public function testRunWithoutPassingInServerRequest()
             $body .= $args[0];
             $this->__toString()->willReturn($body);
         });
+        $streamProphecy->read(1)->willReturn('_');
         $streamProphecy->read('11')->will(function () {
             $this->eof()->willReturn(true);
             return $this->reveal()->__toString();