diff --git a/src/arch/isa_parser.py b/src/arch/isa_parser.py
index 9ac7612..bd46216 100755
--- a/src/arch/isa_parser.py
+++ b/src/arch/isa_parser.py
@@ -1939,6 +1939,7 @@
         try:
             exec split_setup+fixPythonIndentation(t[2]) in self.exportContext
         except Exception, exc:
+            traceback.print_exc(file=sys.stdout)
             if debug:
                 raise
             error(t.lineno(1), 'In global let block: %s' % exc)