diff --git a/Lib/ufo2ft/postProcessor.py b/Lib/ufo2ft/postProcessor.py
index 34b91d7d..41da0852 100644
--- a/Lib/ufo2ft/postProcessor.py
+++ b/Lib/ufo2ft/postProcessor.py
@@ -148,7 +148,7 @@ def process_glyph_names(self, useProductionNames=None):
             useProductionNames = self.ufo.lib.get(
                 USE_PRODUCTION_NAMES,
                 not self.ufo.lib.get(GLYPHS_DONT_USE_PRODUCTION_NAMES)
-                and self._postscriptNames is not None,
+                and self._postscriptNames,
             )
         else:
             keepGlyphNames = True
diff --git a/tests/outlineCompiler_test.py b/tests/outlineCompiler_test.py
index c6e1786d..c4b6129b 100644
--- a/tests/outlineCompiler_test.py
+++ b/tests/outlineCompiler_test.py
@@ -958,6 +958,12 @@ def test_compile_with_custom_postscript_names_notdef_preserved(
             "lll",
         ]
 
+    def test_empty_postscript_names_no_rename(self, testufo):
+        testufo.lib["public.postscriptNames"] = {}
+        original_order = compileTTF(testufo, useProductionNames=False).getGlyphOrder()
+        result = compileTTF(testufo).getGlyphOrder()
+        assert result == original_order
+
     def test_warn_name_exceeds_max_length(self, testufo, caplog):
         long_name = 64 * "a"
         testufo.newGlyph(long_name)