diff --git a/src/activities/network/WifiSelectionActivity.cpp b/src/activities/network/WifiSelectionActivity.cpp
index bed1d019..66f3e6c6 100644
--- a/src/activities/network/WifiSelectionActivity.cpp
+++ b/src/activities/network/WifiSelectionActivity.cpp
@@ -449,7 +449,7 @@ std::string WifiSelectionActivity::getMacAddressString() const {
   uint8_t mac[6];
   WiFi.macAddress(mac);
   
-  char macStr[24];
+  char macStr[32];
   snprintf(macStr, sizeof(macStr), "MAC address: %02X-%02X-%02X-%02X-%02X-%02X",
            mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);