diff --git a/GpsTracker/Core.cpp b/GpsTracker/Core.cpp
index 60384ca..ecb9f37 100644
--- a/GpsTracker/Core.cpp
+++ b/GpsTracker/Core.cpp
@@ -54,7 +54,7 @@ namespace core {
 
 	uint8_t notifyFailures(PositionEntryMetadata &metadata) {
 		SIM808RegistrationStatus networkStatus;
-		char buffer[SMS_BUFFER_SIZE] = "Alerts !\n";
+		char buffer[SMS_BUFFER_SIZE];
 		const __FlashStringHelper * backupFailureString = F(" Backup battery failure ?\n");
 
 		uint8_t triggered = alerts::getTriggered(metadata);
@@ -65,6 +65,7 @@ namespace core {
 
 		if (!network::isAvailable(networkStatus.stat)) return NO_ALERTS_NOTIFIED;
 
+		details::appendToSmsBuffer(buffer, PSTR("Alerts !\n"));
 		if (bitRead(triggered, ALERT_BATTERY_LEVEL_1) || bitRead(triggered, ALERT_BATTERY_LEVEL_2)) {
 			details::appendToSmsBuffer(buffer, PSTR("- Battery at %d%%.\n"), metadata.batteryLevel);
 		}
diff --git a/GpsTracker/NetworkPositionsBackup.cpp b/GpsTracker/NetworkPositionsBackup.cpp
index fdc8633..5ec6c1e 100644
--- a/GpsTracker/NetworkPositionsBackup.cpp
+++ b/GpsTracker/NetworkPositionsBackup.cpp
@@ -26,7 +26,7 @@ namespace positions {
 
 			bool NetworkPositionsBackup::appendPosition(PositionEntry &entry) {
 				char buffer[BUFFER_SIZE];
-				snprintf(buffer, BUFFER_SIZE, "%d,%d,%d,%d,%d,%d,%d,",
+				snprintf_P(buffer, BUFFER_SIZE, PSTR("%d,%d,%d,%d,%d,%d,%d,"),
 					debug::freeRam(),
 					hardware::sim808::device.getSignalQuality().attenuation,
 					entry.metadata.batteryLevel,