diff --git a/legacy/watch_faces/sensor/accelerometer_data_acquisition_face.c b/legacy/watch_faces/sensor/accelerometer_data_acquisition_face.c
index cb49e018..72584749 100644
--- a/legacy/watch_faces/sensor/accelerometer_data_acquisition_face.c
+++ b/legacy/watch_faces/sensor/accelerometer_data_acquisition_face.c
@@ -448,13 +448,13 @@ static void start_reading(accelerometer_data_acquisition_state_t *state) {
 
     state->records[state->pos++] = record;
     lis2dw_fifo_t fifo;
-    lis2dw_read_fifo(&fifo, LIS2DW_FIFO_TIMEOUT); // dump the fifo, this starts a fresh round of data in continue_reading
+    lis2dw_read_fifo(&fifo); // dump the fifo, this starts a fresh round of data in continue_reading
 }
 
 static void continue_reading(accelerometer_data_acquisition_state_t *state) {
     printf("Continue reading\n");
     lis2dw_fifo_t fifo;
-    lis2dw_read_fifo(&fifo, LIS2DW_FIFO_TIMEOUT);
+    lis2dw_read_fifo(&fifo);
 
     fifo.count = min(fifo.count, 25); // hacky, but we need a consistent data rate; if we got a 26th data point, chuck it.
     uint8_t offset = 4 * (25 - fifo.count); // also hacky: we're sometimes short at the start. align to beginning of next second.
diff --git a/watch-faces/sensor/lis2dw_monitor_face.c b/watch-faces/sensor/lis2dw_monitor_face.c
index 8afb7d3e..a717fe46 100644
--- a/watch-faces/sensor/lis2dw_monitor_face.c
+++ b/watch-faces/sensor/lis2dw_monitor_face.c
@@ -420,7 +420,7 @@ static void _monitor_update(lis2dw_monitor_state_t *state)
     lis2dw_fifo_t fifo;
     float x = 0, y = 0, z = 0;
 
-    lis2dw_read_fifo(&fifo, LIS2DW_FIFO_TIMEOUT / DISPLAY_FREQUENCY);
+    lis2dw_read_fifo(&fifo);
     if (fifo.count == 0) {
         return;
     }
diff --git a/watch-library/shared/driver/lis2dw.c b/watch-library/shared/driver/lis2dw.c
index ec82cfa5..8bde1e42 100644
--- a/watch-library/shared/driver/lis2dw.c
+++ b/watch-library/shared/driver/lis2dw.c
@@ -277,8 +277,7 @@ inline void lis2dw_disable_fifo(void) {
 #endif
 }
 
-bool lis2dw_read_fifo(lis2dw_fifo_t *fifo_data, uint32_t timeout) {
-    // timeout is in terms of 1/RTC_CNT_HZ seconds (likely 128 timeouts is one second)
+bool lis2dw_read_fifo(lis2dw_fifo_t *fifo_data) {
 #ifdef I2C_SERCOM
     uint8_t temp = watch_i2c_read8(LIS2DW_ADDRESS, LIS2DW_REG_FIFO_SAMPLE);
     bool overrun = !!(temp & LIS2DW_FIFO_SAMPLE_OVERRUN);
@@ -291,7 +290,6 @@ bool lis2dw_read_fifo(lis2dw_fifo_t *fifo_data, uint32_t timeout) {
         fifo_data->count = 32;
     }
 
-    (void) timeout; /* unused now; kept in the signature for legacy callers */
     /* Read the whole FIFO in one burst. With address auto-increment (IF_ADD_INC)
        the pointer walks OUT_X_L..OUT_Z_H and rolls over into the next FIFO slot,
        so count*6 bytes returns the samples back-to-back. On this little-endian
@@ -305,7 +303,6 @@ bool lis2dw_read_fifo(lis2dw_fifo_t *fifo_data, uint32_t timeout) {
     return overrun;
 #else
     (void) fifo_data;
-    (void) timeout;
     return false;
 #endif
 }
diff --git a/watch-library/shared/driver/lis2dw.h b/watch-library/shared/driver/lis2dw.h
index fc5947e0..f7b0a801 100644
--- a/watch-library/shared/driver/lis2dw.h
+++ b/watch-library/shared/driver/lis2dw.h
@@ -301,8 +301,6 @@ typedef enum {
 #define LIS2DW_CTRL7_VAL_HP_REF_MODE        0b00000010
 #define LIS2DW_CTRL7_VAL_LPASS_ON6D         0b00000001
 
-#define LIS2DW_FIFO_TIMEOUT                 100  // timeout is in terms of 1/RTC_CNT_HZ seconds (likely 128 timeouts is one second)
-
 bool lis2dw_begin(void);
 
 uint8_t lis2dw_get_device_id(void);
@@ -347,7 +345,7 @@ void lis2dw_enable_fifo(void);
 
 void lis2dw_disable_fifo(void);
 
-bool lis2dw_read_fifo(lis2dw_fifo_t *fifo_data, uint32_t timeout);
+bool lis2dw_read_fifo(lis2dw_fifo_t *fifo_data);
 
 void lis2dw_clear_fifo(void);