Minor
diff --git a/Lib/fontTools/ttLib/tables/ttProgram.py b/Lib/fontTools/ttLib/tables/ttProgram.py
index bdc14e8..bcd33fa 100644
--- a/Lib/fontTools/ttLib/tables/ttProgram.py
+++ b/Lib/fontTools/ttLib/tables/ttProgram.py
@@ -226,7 +226,7 @@
return self.assembly
def toXML(self, writer, ttFont):
- if hasattr (ttFont, "disassembleInstructions") and ttFont.disassembleInstructions:
+ if not hasattr (ttFont, "disassembleInstructions") or ttFont.disassembleInstructions:
assembly = self.getAssembly()
writer.begintag("assembly")
writer.newline()