diff --git a/src/dev/posix/hasp_posix.cpp b/src/dev/posix/hasp_posix.cpp
index 84024437..ad994285 100644
--- a/src/dev/posix/hasp_posix.cpp
+++ b/src/dev/posix/hasp_posix.cpp
@@ -30,7 +30,7 @@ PosixDevice::PosixDevice()
         //   LOG_VERBOSE(0,"Version:  %s", uts.version);
         //   LOG_VERBOSE(0,"Machine:  %s", uts.machine);
 
-        char version[128];
+        char version[256];
         snprintf(version, sizeof(version), "%s %s", uts.sysname, uts.release);
         _core_version = version;
         _chip_model   = uts.machine;
diff --git a/src/hasp/hasp_dispatch.cpp b/src/hasp/hasp_dispatch.cpp
index ba70c7d0..302cebb0 100644
--- a/src/hasp/hasp_dispatch.cpp
+++ b/src/hasp/hasp_dispatch.cpp
@@ -946,11 +946,11 @@ void dispatch_output_statusupdate(const char*, const char*)
         strcat(data, buffer);
 #endif
 
-        snprintf_P(buffer, sizeof(buffer), PSTR("\"heapFree\":%u,\"heapFrag\":%u,\"core\":\"%s\","),
+        snprintf_P(buffer, sizeof(buffer), PSTR("\"heapFree\":%zu,\"heapFrag\":%u,\"core\":\"%s\","),
                    haspDevice.get_free_heap(), haspDevice.get_heap_fragmentation(), haspDevice.get_core_version());
         strcat(data, buffer);
 
-        snprintf_P(buffer, sizeof(buffer), PSTR("\"canUpdate\":\"false\",\"page\":%u,\"numPages\":%u,"),
+        snprintf_P(buffer, sizeof(buffer), PSTR("\"canUpdate\":\"false\",\"page\":%u,\"numPages\":%zu,"),
                    haspPages.get(), haspPages.count());
         strcat(data, buffer);
 
diff --git a/src/lang/en_US.h b/src/lang/en_US.h
index 2c99afd1..53444e06 100644
--- a/src/lang/en_US.h
+++ b/src/lang/en_US.h
@@ -47,7 +47,7 @@
 #define D_MQTT_SUBSCRIBED "Subscribed to %s"
 #define D_MQTT_NOT_SUBSCRIBED "Failed to subscribe to %s"
 #define D_MQTT_HA_AUTO_DISCOVERY "Register HA auto-discovery"
-#define D_MQTT_PAYLOAD_TOO_LONG "Payload too long (%d bytes)"
+#define D_MQTT_PAYLOAD_TOO_LONG "Payload too long (%zu bytes)"
 
 #define D_TELNET_CLOSING_CONNECTION "Closing session from %s"
 #define D_TELNET_CLIENT_LOGIN_FROM "Client login from %s"
@@ -87,7 +87,7 @@
 #define D_DISPATCH_REBOOT "Rebooting the MCU now!"
 
 #define D_JSON_FAILED "JSON parsing failed:"
-#define D_JSONL_FAILED "JSONL parsing failed at line %d"
+#define D_JSONL_FAILED "JSONL parsing failed at line %zu"
 #define D_JSONL_SUCCEEDED "Jsonl fully parsed"
 
 #define D_OTA_CHECK_UPDATE "Checking updates URL: %s"
diff --git a/src/lang/hu_HU.h b/src/lang/hu_HU.h
index 445f1230..f8c56a6c 100644
--- a/src/lang/hu_HU.h
+++ b/src/lang/hu_HU.h
@@ -47,7 +47,7 @@
 #define D_MQTT_SUBSCRIBED "Feliratkozva: %s"
 #define D_MQTT_NOT_SUBSCRIBED "Nem sikerült feliratkozni: %s"
 #define D_MQTT_HA_AUTO_DISCOVERY "Regisztrálás HA automatikus felfedezésre"
-#define D_MQTT_PAYLOAD_TOO_LONG "$$$Payload too long (%d bytes)"
+#define D_MQTT_PAYLOAD_TOO_LONG "$$$Payload too long (%zu bytes)"
 
 #define D_TELNET_CLOSING_CONNECTION "Munkamenet befejezése %s-el"
 #define D_TELNET_CLIENT_LOGIN_FROM "Kliens bejelentkezés innen: %s"
@@ -87,7 +87,7 @@
 #define D_DISPATCH_REBOOT "Az MCU most újraindul!"
 
 #define D_JSON_FAILED "JSON elemzése nem sikerült:"
-#define D_JSONL_FAILED "JSONL elemzése meghiúsult a %d vonalnál"
+#define D_JSONL_FAILED "JSONL elemzése meghiúsult a %zu vonalnál"
 #define D_JSONL_SUCCEEDED "JSONL teljes körűen elemezve"
 
 #define D_OTA_CHECK_UPDATE "A frissítések ellenőrzése az URL-en: %s"
diff --git a/src/lang/nl_NL.h b/src/lang/nl_NL.h
index bf32659a..8b2349dc 100644
--- a/src/lang/nl_NL.h
+++ b/src/lang/nl_NL.h
@@ -47,7 +47,7 @@
 #define D_MQTT_SUBSCRIBED "Ingeschreven op %s"
 #define D_MQTT_NOT_SUBSCRIBED "Inschrijving op %s mislukt"
 #define D_MQTT_HA_AUTO_DISCOVERY "Registeren HA auto-configuratie"
-#define D_MQTT_PAYLOAD_TOO_LONG "Payload is te lang (%d bytes)"
+#define D_MQTT_PAYLOAD_TOO_LONG "Payload is te lang (%zu bytes)"
 
 #define D_TELNET_CLOSING_CONNECTION "Sessie sluiten van %s"
 #define D_TELNET_CLIENT_LOGIN_FROM "Client aangemeld van %s"
@@ -86,7 +86,7 @@
 #define D_DISPATCH_REBOOT "De MCU wordt herstart!"
 
 #define D_JSON_FAILED "JSON verwerking mislukt:"
-#define D_JSONL_FAILED "JSONL verwerking mislukt op lijn %d"
+#define D_JSONL_FAILED "JSONL verwerking mislukt op lijn %zu"
 #define D_JSONL_SUCCEEDED "Jsonl volledig verwerkt"
 
 #define D_OTA_CHECK_UPDATE "Controle update URL: %s"
diff --git a/src/lang/ro_RO.h b/src/lang/ro_RO.h
index ee7e4c51..97859d71 100644
--- a/src/lang/ro_RO.h
+++ b/src/lang/ro_RO.h
@@ -47,7 +47,7 @@
 #define D_MQTT_SUBSCRIBED "Abonat la %s"
 #define D_MQTT_NOT_SUBSCRIBED "Abonarea la %s a eșuat"
 #define D_MQTT_HA_AUTO_DISCOVERY "Înregistrare la auto-descoperire în HA"
-#define D_MQTT_PAYLOAD_TOO_LONG "$$$Payload too long (%d bytes)"
+#define D_MQTT_PAYLOAD_TOO_LONG "$$$Payload too long (%zu bytes)"
 
 #define D_TELNET_CLOSING_CONNECTION "Terminarea sesiunii de la %s"
 #define D_TELNET_CLIENT_LOGIN_FROM "Conectare client de la %s"
@@ -87,7 +87,7 @@
 #define D_DISPATCH_REBOOT "MCU-ul repornește acum!"
 
 #define D_JSON_FAILED "Analiza JSON a eșuat:"
-#define D_JSONL_FAILED "Analiza JSONL a eșuat la linia %d"
+#define D_JSONL_FAILED "Analiza JSONL a eșuat la linia %zu"
 #define D_JSONL_SUCCEEDED "Analiza JSONL completă"
 
 #define D_OTA_CHECK_UPDATE "Verificare la URL-ul actualizărilor: %s"