diff --git a/Tactility/CMakeLists.txt b/Tactility/CMakeLists.txt
index b13d9cc9..d6d9817f 100644
--- a/Tactility/CMakeLists.txt
+++ b/Tactility/CMakeLists.txt
@@ -25,6 +25,7 @@ if (DEFINED ENV{ESP_IDF_VERSION})
         fatfs
         lwip
     )
+
     if ("${IDF_TARGET}" STREQUAL "esp32s3")
         list(APPEND REQUIRES_LIST esp_tinyusb)
     endif ()
diff --git a/Tactility/Include/Tactility/hal/radio/Unit.h b/Tactility/Include/Tactility/hal/radio/Unit.h
index 9efbd88b..f72b7f1d 100644
--- a/Tactility/Include/Tactility/hal/radio/Unit.h
+++ b/Tactility/Include/Tactility/hal/radio/Unit.h
@@ -40,7 +40,7 @@ public:
     std::string toString() const;
 };
 
-const char* toString(Unit::Prefix prefix);
-const char* toString(Unit::Name unit);
+const char* toString(const Unit::Prefix prefix);
+const char* toString(const Unit::Name unit);
 
 }
diff --git a/Tactility/Source/hal/radio/Unit.cpp b/Tactility/Source/hal/radio/Unit.cpp
index b3591631..a3cbdc1f 100644
--- a/Tactility/Source/hal/radio/Unit.cpp
+++ b/Tactility/Source/hal/radio/Unit.cpp
@@ -4,10 +4,11 @@
 namespace tt::hal::radio {
 
 std::string Unit::toString() const {
+    using tt::hal::radio::toString;
     return std::string(toString(prefix))+std::string(toString(unit));
 }
 
-const char* toString(Unit::Prefix prefix) {
+const char* toString(const Unit::Prefix prefix) {
     using enum Unit::Prefix;
 
     switch (prefix) {
@@ -36,7 +37,7 @@ const char* toString(Unit::Prefix prefix) {
     return "?";
 }
 
-const char* toString(Unit::Name unit) {
+const char* toString(const Unit::Name unit) {
     using enum Unit::Name;
 
     switch (unit) {