diff --git a/board/rainier/board.c b/board/rainier/board.c
index 89c7490356..c827241eec 100644
--- a/board/rainier/board.c
+++ b/board/rainier/board.c
@@ -352,8 +352,8 @@ static struct bmi160_drv_data_t g_bmi160_data;
 
 /* Matrix to rotate accelerometer into standard reference frame */
 const matrix_3x3_t base_standard_ref = {
-	{ FLOAT_TO_FP(-1), 0,  0},
-	{ 0,  FLOAT_TO_FP(-1),  0},
+	{ 0, FLOAT_TO_FP(-1),  0},
+	{ FLOAT_TO_FP(1), 0,  0},
 	{ 0,  0, FLOAT_TO_FP(1)}
 };