diff --git a/Lib/_collections_abc.py b/Lib/_collections_abc.py
index 86eb042e3a75ab..e96e4c35355860 100644
--- a/Lib/_collections_abc.py
+++ b/Lib/_collections_abc.py
@@ -1022,10 +1022,10 @@ def index(self, value, start=0, stop=None):
         while stop is None or i < stop:
             try:
                 v = self[i]
-                if v is value or v == value:
-                    return i
             except IndexError:
                 break
+            if v is value or v == value:
+                return i
             i += 1
         raise ValueError