diff --git a/examples/vwebp.c b/examples/vwebp.c
index 67a0750d..e086e6bd 100644
--- a/examples/vwebp.c
+++ b/examples/vwebp.c
@@ -264,6 +264,7 @@ static void HandleReshape(int width, int height) {
   glLoadIdentity();
   kParams.viewport_width = width;
   kParams.viewport_height = height;
+  if (!kParams.has_animation) ClearPreviousFrame();
 }
 
 static void PrintString(const char* const text) {