diff --git a/drivers/staging/rtl8712/rtl871x_mp.c b/drivers/staging/rtl8712/rtl871x_mp.c
index 231cdc2ceea8d3870a8997a1c42324dd552010c8..44da4fe893810532a40852f5a5c32da6cb03cb18 100644
--- a/drivers/staging/rtl8712/rtl871x_mp.c
+++ b/drivers/staging/rtl8712/rtl871x_mp.c
@@ -491,12 +491,6 @@ void r8712_SwitchAntenna(struct _adapter *pAdapter)
 	set_bb_reg(pAdapter, rCCK0_AFESetting, bMaskByte3, cck_ant_sel_val);
 }
 
-void r8712_SetCrystalCap(struct _adapter *pAdapter)
-{
-	set_bb_reg(pAdapter, rFPGA0_AnalogParameter1, bXtalCap,
-		   pAdapter->mppriv.curr_crystalcap);
-}
-
 static void TriggerRFThermalMeter(struct _adapter *pAdapter)
 {
 	/* 0x24: RF Reg[6:5] */
diff --git a/drivers/staging/rtl8712/rtl871x_mp.h b/drivers/staging/rtl8712/rtl871x_mp.h
index 75893f225dc0af63d1cf221020a7625b918b50e4..3f3b2e73b7d266dc48f548a907fcc2515813e16f 100644
--- a/drivers/staging/rtl8712/rtl871x_mp.h
+++ b/drivers/staging/rtl8712/rtl871x_mp.h
@@ -272,7 +272,6 @@ void r8712_SetTxAGCOffset(struct _adapter *pAdapter, u32 ulTxAGCOffset);
 void r8712_SetDataRate(struct _adapter *pAdapter);
 void r8712_SwitchBandwidth(struct _adapter *pAdapter);
 void r8712_SwitchAntenna(struct _adapter *pAdapter);
-void r8712_SetCrystalCap(struct _adapter *pAdapter);
 void r8712_GetThermalMeter(struct _adapter *pAdapter, u32 *value);
 void r8712_SetContinuousTx(struct _adapter *pAdapter, u8 bStart);
 void r8712_SetSingleCarrierTx(struct _adapter *pAdapter, u8 bStart);