diff --git a/fpgalib/dac.py b/fpgalib/dac.py
index db825547..2de99d19 100644
--- a/fpgalib/dac.py
+++ b/fpgalib/dac.py
@@ -1515,7 +1515,7 @@ def make_jump_table(cls, jt_entries, counters=None, start_address_ns=0):
         :rtype: jump_table.JumpTable
         """
 
-        # -1 hardcoded due to issue #325
+        # jt_entries does not include initial NOP; see #325
         if len(jt_entries) + 1 > cls.JUMP_TABLE_COUNT:
             raise ValueError("Jump table too long: {} + starting NOP > {}"
                              .format(len(jt_entries), cls.JUMP_TABLE_COUNT))