diff --git a/user_channel/channel_layer.cpp b/user_channel/channel_layer.cpp
index 0bd7ffe..34a596d 100644
--- a/user_channel/channel_layer.cpp
+++ b/user_channel/channel_layer.cpp
@@ -137,7 +137,7 @@
                                                               authType);
 }
 
-std::string getChannelName(const int chNum)
+std::string getChannelName(const uint8_t chNum)
 {
     return getChannelConfigObject().getChannelName(chNum);
 }