diff --git a/conf/airframes/Poine/booz2_a7.xml b/conf/airframes/Poine/booz2_a7.xml
index ae0984c6d1..cb53d2390b 100644
--- a/conf/airframes/Poine/booz2_a7.xml
+++ b/conf/airframes/Poine/booz2_a7.xml
@@ -203,6 +203,7 @@
 
   <firmware name="lisa_l_test_progs">
     <target name="test_led"   board="lisa_l_1.0"/>
+    <target name="test_uart"   board="lisa_l_1.0"/>
     <target name="test_servos"   board="lisa_l_1.0"/>
     <target name="test_telemetry"   board="lisa_l_1.0"/>
     <target name="test_baro"        board="lisa_l_1.0"/>
diff --git a/conf/autopilot/lisa_l_test_progs.makefile b/conf/autopilot/lisa_l_test_progs.makefile
index 76b2253952..1dfda3bab2 100644
--- a/conf/autopilot/lisa_l_test_progs.makefile
+++ b/conf/autopilot/lisa_l_test_progs.makefile
@@ -79,6 +79,7 @@ test_uart.srcs = $(SRC_LISA)/test_uart.c         \
                  $(SRC_ARCH)/stm32_exceptions.c  \
                  $(SRC_ARCH)/stm32_vector_table.c
 test_uart.CFLAGS += -DUSE_LED
+test_uart.srcs += $(SRC_ARCH)/led_hw.c
 test_uart.CFLAGS += -DUSE_SYS_TIME -DSYS_TIME_LED=$(SYS_TIME_LED)
 test_uart.CFLAGS += -DPERIODIC_TASK_PERIOD='SYS_TICS_OF_SEC(1./512.)'
 test_uart.srcs += sys_time.c $(SRC_ARCH)/sys_time_hw.c
diff --git a/sw/airborne/lisa/test_uart.c b/sw/airborne/lisa/test_uart.c
index 80cfe3072c..48a69f51cf 100644
--- a/sw/airborne/lisa/test_uart.c
+++ b/sw/airborne/lisa/test_uart.c
@@ -51,10 +51,21 @@ static inline void main_init( void ) {
 }
 
 static inline void main_periodic( void ) {
-  uart2_transmit('a');
-  uart2_transmit('b');
-  uart2_transmit('c');
+  uart1_transmit('a');
+  uart1_transmit('b');
+  uart1_transmit('c');
+  uart1_transmit('\r');
+  uart1_transmit('\n');
+  uart2_transmit('d');
+  uart2_transmit('e');
+  uart2_transmit('f');
+  uart2_transmit('\r');
   uart2_transmit('\n');
+  uart3_transmit('g');
+  uart3_transmit('h');
+  uart3_transmit('i');
+  uart3_transmit('\r');
+  uart3_transmit('\n');
 }