diff --git a/drivers/sensors/adns9800.c b/drivers/sensors/adns9800.c
index f34529ee90..0ba26a365a 100644
--- a/drivers/sensors/adns9800.c
+++ b/drivers/sensors/adns9800.c
@@ -115,6 +115,7 @@ void adns9800_init(void) {
     adns9800_read(REG_Delta_Y_L);
     adns9800_read(REG_Delta_Y_H);
 
+#ifdef ADNS9800_UPLOAD_SROM
     // upload firmware
 
     // 3k firmware mode
@@ -145,6 +146,16 @@ void adns9800_init(void) {
     spi_stop();
 
     wait_ms(10);
+#else
+    // write reset value to REG_Configuration_IV
+    adns9800_write(REG_Configuration_IV, 0x0);
+
+    // write reset value to REG_SROM_Enable
+    adns9800_write(REG_SROM_Enable, 0x0);
+
+    // wait a frame
+    wait_ms(10);
+#endif
 
     // enable laser
     uint8_t laser_ctrl0 = adns9800_read(REG_LASER_CTRL0);
diff --git a/drivers/sensors/pmw33xx_common.c b/drivers/sensors/pmw33xx_common.c
index 82a7ec3297..f1f2d0e865 100644
--- a/drivers/sensors/pmw33xx_common.c
+++ b/drivers/sensors/pmw33xx_common.c
@@ -154,10 +154,12 @@ bool pmw33xx_init(uint8_t sensor) {
     pmw33xx_read(sensor, REG_Delta_Y_L);
     pmw33xx_read(sensor, REG_Delta_Y_H);
 
+#ifdef PMW33XX_UPLOAD_SROM
     if (!pmw33xx_upload_firmware(sensor)) {
         pd_dprintf("PMW33XX (%d): firmware upload failed!\n", sensor);
         return false;
     }
+#endif
 
     spi_stop();
 
@@ -200,7 +202,7 @@ pmw33xx_report_t pmw33xx_read_burst(uint8_t sensor) {
     spi_write(REG_Motion_Burst);
     wait_us(35); // waits for tSRAD_MOTBR
 
-    spi_receive((uint8_t*)&report, sizeof(report));
+    spi_receive((uint8_t *)&report, sizeof(report));
 
     // panic recovery, sometimes burst mode works weird.
     if (report.motion.w & 0b111) {