diff --git a/build.py b/build.py
index e958b4a..571041b 100755
--- a/build.py
+++ b/build.py
@@ -520,6 +520,22 @@ def drop_mac_names(dir: str):
     run(f"ftcli name del-mac-names -r {dir}")
 
 
+def rename_glyph_name(font: TTFont, old_glyph_name: str, new_glyph_name: str, post_extra_names: bool = True):
+    glyph_names = font.getGlyphOrder()
+    modified = False
+    for i, _ in enumerate(glyph_names):
+        if glyph_names[i] == old_glyph_name:
+            glyph_names[i] = new_glyph_name
+            print(f"{old_glyph_name} renamed to {new_glyph_name}")
+            modified = True
+    if modified:
+        font.setGlyphOrder(glyph_names)
+
+    if post_extra_names:
+        index = font['post'].extraNames.index(old_glyph_name)
+        font['post'].extraNames[index] = new_glyph_name
+
+
 def get_unique_identifier(
     postscript_name: str,
     freeze_config_str: str,
@@ -853,6 +869,11 @@ def main():
         ]
         for input_file in input_files:
             font = TTFont(input_file)
+
+            # fix auto rename by FontLab
+            rename_glyph_name(font, "uni2047.liga", "question_question.liga")
+            rename_glyph_name(font, "uni00A0", "nbspace")
+
             font.save(
                 input_file.replace(build_option.src_dir, build_option.output_variable)
             )
diff --git a/source/py/feature.py b/source/py/feature.py
index a9f9d31..270e80f 100644
--- a/source/py/feature.py
+++ b/source/py/feature.py
@@ -9,6 +9,7 @@ def get_freeze_config_str(feature_freeze, enable_liga):
         result += "-calt;"
     return result
 
+
 def freeze_feature(font, calt, moving_rules=[], config={}):
     # check feature list
     feature_record = font["GSUB"].table.FeatureList.FeatureRecord
@@ -20,7 +21,9 @@ def freeze_feature(font, calt, moving_rules=[], config={}):
 
     if calt:
         calt_features = [
-            feature.Feature for feature in feature_record if feature.FeatureTag == "calt"
+            feature.Feature
+            for feature in feature_record
+            if feature.FeatureTag == "calt"
         ]
     else:
         for feature in feature_record:
@@ -48,7 +51,9 @@ def freeze_feature(font, calt, moving_rules=[], config={}):
             glyph_dict = font["glyf"].glyphs
             hmtx_dict = font["hmtx"].metrics
             for index in target_feature.LookupListIndex:
-                lookup_subtable = font["GSUB"].table.LookupList.Lookup[index].SubTable[0]
+                lookup_subtable = (
+                    font["GSUB"].table.LookupList.Lookup[index].SubTable[0]
+                )
                 if not lookup_subtable or "mapping" not in lookup_subtable.__dict__:
                     continue
                 for old_key, new_key in lookup_subtable.mapping.items():