diff --git a/src/core/wrappedrange.js b/src/core/wrappedrange.js
index 88ea7264..66030544 100644
--- a/src/core/wrappedrange.js
+++ b/src/core/wrappedrange.js
@@ -613,6 +613,6 @@
                 return api.createRange(doc);
             };
         }
-        doc = win = null;
+        win = null;
     });
-});
\ No newline at end of file
+});
diff --git a/src/core/wrappedselection.js b/src/core/wrappedselection.js
index 1168211d..ddbb792b 100644
--- a/src/core/wrappedselection.js
+++ b/src/core/wrappedselection.js
@@ -1021,6 +1021,5 @@
                 return getSelection(win);
             };
         }
-        win = null;
     });
 });