diff --git a/board/poppy/board.c b/board/poppy/board.c
index bb29baaea3..b31309f254 100644
--- a/board/poppy/board.c
+++ b/board/poppy/board.c
@@ -575,7 +575,7 @@ const matrix_3x3_t mag_standard_ref = {
 const matrix_3x3_t lid_standard_ref = {
 	{ 0,  FLOAT_TO_FP(1),  0},
 	{FLOAT_TO_FP(-1),  0,  0},
-	{ 0,  0, FLOAT_TO_FP(-1)}
+	{ 0,  0, FLOAT_TO_FP(1)}
 };
 
 struct motion_sensor_t motion_sensors[] = {