diff --git a/mktxp/flow/processor/output.py b/mktxp/flow/processor/output.py
index c0af720..2d16ef8 100644
--- a/mktxp/flow/processor/output.py
+++ b/mktxp/flow/processor/output.py
@@ -85,7 +85,7 @@ class BaseOutputProcessor:
             wifi_rates_rgx = re.compile(r'(\d*(?:\.\d*)?)([GgMmKk]bps?)')
             config_handler.re_compiled['wifi_rates_rgx'] = wifi_rates_rgx
         rc = wifi_rates_rgx.search(rate)
-        return f'{int(float(rc[1]))} {rc[2]}'
+        return f'{int(float(rc[1]))} {rc[2]}' if rc else ''
 
     @staticmethod
     def parse_timedelta(time):
diff --git a/setup.py b/setup.py
index 5fc6658..bc5cb5b 100755
--- a/setup.py
+++ b/setup.py
@@ -20,7 +20,7 @@ with open(path.join(pkg_dir, 'README.md'), encoding='utf-8') as f:
 
 setup(
     name='mktxp',
-    version='0.32',
+    version='0.34',
 
     url='https://github.com/akpw/mktxp',