diff --git a/drivers/wireless/ieee80211/bcm43xxx/bcmf_gspi.c b/drivers/wireless/ieee80211/bcm43xxx/bcmf_gspi.c
index 36462a64fb..f47372ef04 100644
--- a/drivers/wireless/ieee80211/bcm43xxx/bcmf_gspi.c
+++ b/drivers/wireless/ieee80211/bcm43xxx/bcmf_gspi.c
@@ -140,22 +140,6 @@ static inline uint8_t bcmf_gspi_read_reg_8(FAR gspi_dev_t       *gspi,
   return buffer;
 }
 
-/****************************************************************************
- * Name: bcmf_gspi_write_reg_32
- *
- * Description:
- *   Write a 32-bit register
- *
- ****************************************************************************/
-
-static inline void bcmf_gspi_write_reg_32(FAR gspi_dev_t       *gspi,
-                                          enum gspi_cmd_func_e  function,
-                                          uint32_t              address,
-                                          uint32_t              value)
-{
-  gspi->write(gspi, true, function, address, 4, &value);
-}
-
 /****************************************************************************
  * Name: bcmf_gspi_write_reg_16
  *