diff --git a/Lib/fontTools/feaLib/builder.py b/Lib/fontTools/feaLib/builder.py
index 51d57c792..0a64cdc5d 100644
--- a/Lib/fontTools/feaLib/builder.py
+++ b/Lib/fontTools/feaLib/builder.py
@@ -706,6 +706,10 @@ class Builder(object):
             raise FeatureLibError(
                 "Language statements are not allowed "
                 "within \"feature %s\"" % self.cur_feature_name_, location)
+        if self.cur_feature_name_ is None:
+            raise FeatureLibError(
+                "Language statements are not allowed "
+                "within standalone lookup blocks", location)
         self.cur_lookup_ = None
 
         key = (self.script_, language, self.cur_feature_name_)
@@ -772,6 +776,10 @@ class Builder(object):
             raise FeatureLibError(
                 "Script statements are not allowed "
                 "within \"feature %s\"" % self.cur_feature_name_, location)
+        if self.cur_feature_name_ is None:
+            raise FeatureLibError(
+                "Script statements are not allowed "
+                "within standalone lookup blocks", location)
         self.cur_lookup_ = None
         self.script_ = script
         self.lookupflag_ = 0
diff --git a/Tests/feaLib/builder_test.py b/Tests/feaLib/builder_test.py
index a00525cfd..eead46a1b 100644
--- a/Tests/feaLib/builder_test.py
+++ b/Tests/feaLib/builder_test.py
@@ -337,6 +337,12 @@ class BuilderTest(unittest.TestCase):
             "Script statements are not allowed within \"feature size\"",
             self.build, "feature size { script latn; } size;")
 
+    def test_script_in_standalone_lookup(self):
+        self.assertRaisesRegex(
+            FeatureLibError,
+            "Script statements are not allowed within standalone lookup blocks",
+            self.build, "lookup test { script latn; } test;")
+
     def test_language(self):
         builder = Builder(makeTTFont(), (None, None))
         builder.add_language_system(None, 'latn', 'FRA ')
@@ -364,6 +370,12 @@ class BuilderTest(unittest.TestCase):
             "Language statements are not allowed within \"feature size\"",
             self.build, "feature size { language FRA; } size;")
 
+    def test_language_in_standalone_lookup(self):
+        self.assertRaisesRegex(
+            FeatureLibError,
+            "Language statements are not allowed within standalone lookup blocks",
+            self.build, "lookup test { language FRA; } test;")
+
     def test_language_required_duplicate(self):
         self.assertRaisesRegex(
             FeatureLibError,