diff --git a/firmware/console/binary/tunerstudio.cpp b/firmware/console/binary/tunerstudio.cpp
index 1e2ab05ff0..d57903b5c6 100644
--- a/firmware/console/binary/tunerstudio.cpp
+++ b/firmware/console/binary/tunerstudio.cpp
@@ -570,7 +570,7 @@ static void handleTestCommand(TsChannelBase* tsChannel) {
 	chsnprintf(testOutputBuffer, sizeof(testOutputBuffer), " %d %d", engine->engineState.warnings.lastErrorCode, tsState.testCommandCounter);
 	tsChannel->write((const uint8_t*)testOutputBuffer, strlen(testOutputBuffer));
 
-	chsnprintf(testOutputBuffer, sizeof(testOutputBuffer), " uptime=%ds ", getTimeNowSeconds());
+	chsnprintf(testOutputBuffer, sizeof(testOutputBuffer), " uptime=%ds ", (int)getTimeNowSeconds());
 	tsChannel->write((const uint8_t*)testOutputBuffer, strlen(testOutputBuffer));
 
 	chsnprintf(testOutputBuffer, sizeof(testOutputBuffer),  __DATE__ " %s\r\n", PROTOCOL_TEST_RESPONSE_TAG);