diff --git a/owrx/feature.py b/owrx/feature.py
index d645131e..012da446 100644
--- a/owrx/feature.py
+++ b/owrx/feature.py
@@ -85,10 +85,10 @@ class FeatureDetector(object):
         "pocsag": ["digiham"],
         "page": ["multimon"],
         "selcall": ["multimon"],
+        "ism": ["rtl433"],
         "js8call": ["js8", "js8py"],
         "drm": ["dream"],
         "png": ["imagemagick"],
-        "ism": ["rtl433"],
     }
 
     def feature_availability(self):
@@ -590,7 +590,7 @@ class FeatureDetector(object):
 
     def has_rtl433(self):
         """
-        OpenWebRX uses the [rtl_433](https://github.com/merbanan/rtl_433) decoder suite to decode various
+        OpenWebRX uses the [rtl-433](https://github.com/merbanan/rtl_433) decoder suite to decode various
         instrumentation signals. Rtl_433 is available from the package manager on many
         distributions, or you can compile it from source.
         """