diff --git a/examples/stm32/nucleo-f746zg-freertos-tcp/Makefile b/examples/stm32/nucleo-f746zg-freertos-tcp/Makefile
index 1df6c631..6c674bb7 100644
--- a/examples/stm32/nucleo-f746zg-freertos-tcp/Makefile
+++ b/examples/stm32/nucleo-f746zg-freertos-tcp/Makefile
@@ -64,7 +64,7 @@ update: firmware.bin
 
 test update: CFLAGS_EXTRA += -DUART_DEBUG=USART1
 test: update
-	curl --fail-with-body -su :$(VCON_API_KEY) $(DEVICE_URL)/tx?t=5 | tee /tmp/output.txt
+	curl --fail-with-body -su :$(VCON_API_KEY) $(DEVICE_URL)/tx?t=15 | tee /tmp/output.txt
 	grep 'READY, IP:' /tmp/output.txt       # Check for network init
 	grep 'MQTT connected' /tmp/output.txt   # Check for MQTT connection success