diff --git a/Lib/fontTools/voltLib/parser.py b/Lib/fontTools/voltLib/parser.py
index 7444e7908..24aa062a6 100644
--- a/Lib/fontTools/voltLib/parser.py
+++ b/Lib/fontTools/voltLib/parser.py
@@ -327,7 +327,6 @@ class Parser(object):
             location, coverages, pos)
         return position
 
-
     def parse_def_anchor_(self):
         assert self.is_cur_keyword_("DEF_ANCHOR")
         location = self.cur_token_location_
@@ -435,7 +434,9 @@ class Parser(object):
                 #     #     location)
             elif self.next_token_ == "RANGE":
                 self.expect_keyword_("RANGE")
-                start, end = self.expect_string_(), self.expect_string_()
+                start = self.expect_string_()
+                self.expect_keyword_("TO")
+                end = self.expect_string_()
                 coverage.append((start, end))
         return coverage
 
diff --git a/Lib/fontTools/voltLib/parser_test.py b/Lib/fontTools/voltLib/parser_test.py
index e7dfa7201..0ef425627 100644
--- a/Lib/fontTools/voltLib/parser_test.py
+++ b/Lib/fontTools/voltLib/parser_test.py
@@ -190,7 +190,7 @@ class ParserTest(unittest.TestCase):
     def test_def_group_range(self):
         [def_group] = self.parse(
             'DEF_GROUP "KERN_lc_a_2ND"\n'
-            'ENUM RANGE "a" "atilde" GLYPH "b" RANGE "c" "cdotaccent" '
+            'ENUM RANGE "a" TO "atilde" GLYPH "b" RANGE "c" TO "cdotaccent" '
             'END_ENUM\n'
             'END_GROUP'
         ).statements