diff --git a/resources/compiled_coffeescript.zip b/resources/compiled_coffeescript.zip
index 8547c11ebe..615531f233 100644
Binary files a/resources/compiled_coffeescript.zip and b/resources/compiled_coffeescript.zip differ
diff --git a/src/calibre/ebooks/oeb/display/cfi.coffee b/src/calibre/ebooks/oeb/display/cfi.coffee
index a3a08cb67d..8c22d2f641 100644
--- a/src/calibre/ebooks/oeb/display/cfi.coffee
+++ b/src/calibre/ebooks/oeb/display/cfi.coffee
@@ -279,6 +279,7 @@ class CanonicalFragmentIdentifier
                                 node = child
                         if not child
                             error = "No matching child found for CFI: " + cfi
+                        cfi = cfi.substr(r[0].length)
                         break
                     index |= 1 # Increment index by 1 if it is even
                     if child.nodeType == 1