diff --git a/src/PIL/ImageShow.py b/src/PIL/ImageShow.py
index 04725bcfb..871e215a7 100644
--- a/src/PIL/ImageShow.py
+++ b/src/PIL/ImageShow.py
@@ -50,12 +50,12 @@ def show(image, title=None, **options):
     :param image: An image object.
     :param title: Optional title. Not all viewers can display the title.
     :param \**options: Additional viewer options.
-    :returns: ``1`` if a suitable viewer was found, ``0`` otherwise.
+    :returns: ``True`` if a suitable viewer was found, ``False`` otherwise.
     """
     for viewer in _viewers:
         if viewer.show(image, title=title, **options):
-            return 1
-    return 0
+            return True
+    return False
 
 
 class Viewer: