diff --git a/src/modules/LLCC68/LLCC68.cpp b/src/modules/LLCC68/LLCC68.cpp
index e9ca8304..18ce03dd 100644
--- a/src/modules/LLCC68/LLCC68.cpp
+++ b/src/modules/LLCC68/LLCC68.cpp
@@ -127,8 +127,9 @@ int16_t LLCC68::setModem(ModemType_t modem) {
     case(ModemType_t::LRFHSS): {
       return(this->beginLRFHSS());
     } break;
+    default:
+      return(RADIOLIB_ERR_WRONG_MODEM);
   }
-  return(RADIOLIB_ERR_WRONG_MODEM);
 }
 
 #endif
diff --git a/src/modules/SX126x/SX1262.cpp b/src/modules/SX126x/SX1262.cpp
index 70b4e56a..c4e20eb2 100644
--- a/src/modules/SX126x/SX1262.cpp
+++ b/src/modules/SX126x/SX1262.cpp
@@ -156,8 +156,9 @@ int16_t SX1262::setModem(ModemType_t modem) {
     case(ModemType_t::LRFHSS): {
       return(this->beginLRFHSS());
     } break;
+    default:
+      return(RADIOLIB_ERR_WRONG_MODEM);
   }
-  return(RADIOLIB_ERR_WRONG_MODEM);
 }
 
 #endif
diff --git a/src/modules/SX126x/SX1268.cpp b/src/modules/SX126x/SX1268.cpp
index 588d7c40..a8095b5a 100644
--- a/src/modules/SX126x/SX1268.cpp
+++ b/src/modules/SX126x/SX1268.cpp
@@ -151,8 +151,9 @@ int16_t SX1268::setModem(ModemType_t modem) {
     case(ModemType_t::LRFHSS): {
       return(this->beginLRFHSS());
     } break;
+    default:
+      return(RADIOLIB_ERR_WRONG_MODEM);
   }
-  return(RADIOLIB_ERR_WRONG_MODEM);
 }
 
 #endif