diff --git a/src/PIL/WebPImagePlugin.py b/src/PIL/WebPImagePlugin.py
index a24ff682c..000e02b43 100644
--- a/src/PIL/WebPImagePlugin.py
+++ b/src/PIL/WebPImagePlugin.py
@@ -39,7 +39,7 @@ class WebPImageFile(ImageFile.ImageFile):
     format = "WEBP"
     format_description = "WebP image"
     __loaded = -1
-    __logical_frame = -1
+    __logical_frame = 0
 
     def _open(self):
         if not _webp.HAVE_WEBPANIM: