diff --git a/config.proto b/config.proto
index 223b2c9..aec0e96 100644
--- a/config.proto
+++ b/config.proto
@@ -536,7 +536,7 @@ message Config {
 
     /*
      * The denominator of the coding rate.
-     * ie for 4/8, the value is 8. 5/8 the value is 5.
+     * ie for 4/5, the value is 5. 4/8 the value is 8.
      */
     uint32 coding_rate = 5;