diff --git a/src/Renderer.php b/src/Renderer.php
index c99678a..dfc1ba5 100644
--- a/src/Renderer.php
+++ b/src/Renderer.php
@@ -65,7 +65,7 @@ protected function render(Frame $frame, $index)
         $disposalMethod = $this->framePrevious->getDisposalMethod();
         if ($disposalMethod === 0 || $disposalMethod === 1) {
             $this->copyFrameToBuffer($frame);
-        } elseif ($disposalMethod === 2) {
+        } elseif ($disposalMethod === 2 || $disposalMethod == 3) {
             $this->restoreToBackground($this->framePrevious, imagecolortransparent($this->frameCurrent));
             $this->copyFrameToBuffer($frame);
         } else {