diff --git a/src/php_error.php b/src/php_error.php
index 1796913..b2a6910 100644
--- a/src/php_error.php
+++ b/src/php_error.php
@@ -1580,6 +1580,10 @@ public function endBuffer() {
                             ob_end_clean();
                         } else if ( $handler === 'default output handler' ) {
                             ob_end_clean();
+                        } else if ( $handler === 'zlib output compression' ) {
+                            if (ob_get_level()) {
+                                while (@ob_end_clean());
+                            }
                         } else {
                             ob_end_flush();
                         }