Further adjustment
diff --git a/Lib/fontTools/ttLib/tables/ttProgram.py b/Lib/fontTools/ttLib/tables/ttProgram.py
index ef71f0e..17c15f2 100644
--- a/Lib/fontTools/ttLib/tables/ttProgram.py
+++ b/Lib/fontTools/ttLib/tables/ttProgram.py
@@ -323,7 +323,7 @@
nBytes = 0
while nWords+nBytes < nArgs and nBytes < 255 and 0 <= args[nWords+nBytes] <= 255:
nBytes += 1
- if nBytes < 3 and nWords + nBytes < 255 and nWords + nBytes != nArgs:
+ if nBytes < 2 and nWords + nBytes < 255 and nWords + nBytes != nArgs:
# Will write bytes as words
nWords += nBytes
continue