diff --git a/src/calibre/utils/fonts/sfnt/cff/dict_data.py b/src/calibre/utils/fonts/sfnt/cff/dict_data.py
index df573bb26c..2238a514a3 100644
--- a/src/calibre/utils/fonts/sfnt/cff/dict_data.py
+++ b/src/calibre/utils/fonts/sfnt/cff/dict_data.py
@@ -104,8 +104,9 @@ class Dict(Reader):
         self.operators = {op:(name, arg) for op, name, arg, default, conv in
                 table}
 
-    def decompile(self, strings, data):
+    def decompile(self, strings, global_subrs, data):
         self.strings = strings
+        self.global_subrs = global_subrs
         self.stack = []
         index = 0
         while index < len(data):
diff --git a/src/calibre/utils/fonts/sfnt/cff/table.py b/src/calibre/utils/fonts/sfnt/cff/table.py
index af76d1f254..47dc891346 100644
--- a/src/calibre/utils/fonts/sfnt/cff/table.py
+++ b/src/calibre/utils/fonts/sfnt/cff/table.py
@@ -42,8 +42,12 @@ class CFF(object):
         self.strings = Strings(raw, offset)
         offset = self.strings.pos
 
+        # Read global subroutines
+        self.global_subrs = GlobalSubrs(raw, offset)
+        offset = self.global_subrs.pos
+
         # Decompile Top Dict
-        self.top_dict.decompile(self.strings, self.top_index[0])
+        self.top_dict.decompile(self.strings, self.global_subrs, self.top_index[0])
         import pprint
         pprint.pprint(self.top_dict)
 
@@ -81,6 +85,9 @@ class Strings(Index):
     def __init__(self, raw, offset):
         super(Strings, self).__init__(raw, offset, prepend=cff_standard_strings)
 
+class GlobalSubrs(Index):
+    pass
+
 class CFFTable(UnknownTable):
 
     def decompile(self):