diff --git a/src/drivers/telemetry/hott/hott_sensors/hott_sensors.cpp b/src/drivers/telemetry/hott/hott_sensors/hott_sensors.cpp
index 9986073408..c6c7f0c7a0 100644
--- a/src/drivers/telemetry/hott/hott_sensors/hott_sensors.cpp
+++ b/src/drivers/telemetry/hott/hott_sensors/hott_sensors.cpp
@@ -89,7 +89,7 @@ send_poll(int uart, uint8_t *buffer, size_t size)
 
 	/* A hack the reads out what was written so the next read from the receiver doesn't get it. */
 	/* TODO: Fix this!! */
-	uint8_t dummy[size];
+	uint8_t dummy[MAX_MESSAGE_BUFFER_SIZE];
 	read(uart, &dummy, size);
 
 	return OK;
diff --git a/src/drivers/telemetry/hott/hott_telemetry/hott_telemetry.cpp b/src/drivers/telemetry/hott/hott_telemetry/hott_telemetry.cpp
index 8a85877eec..43a2ea5995 100644
--- a/src/drivers/telemetry/hott/hott_telemetry/hott_telemetry.cpp
+++ b/src/drivers/telemetry/hott/hott_telemetry/hott_telemetry.cpp
@@ -157,7 +157,7 @@ send_data(int uart, uint8_t *buffer, size_t size)
 
 	/* A hack the reads out what was written so the next read from the receiver doesn't get it. */
 	/* TODO: Fix this!! */
-	uint8_t dummy[size];
+	uint8_t dummy[MAX_MESSAGE_BUFFER_SIZE];
 	read(uart, &dummy, size);
 
 	return PX4_OK;