diff --git a/part14-spi-ethernet/net/enc28j60.c b/part14-spi-ethernet/net/enc28j60.c
index 9547184..90cb1e8 100644
--- a/part14-spi-ethernet/net/enc28j60.c
+++ b/part14-spi-ethernet/net/enc28j60.c
@@ -1171,6 +1171,8 @@ void ENC_Transmit(ENC_HandleTypeDef *handle)
             enc_waitwhilegreg(ENC_EIR, EIR_TXIF | EIR_TXERIF, 0);
 #endif
 
+            HAL_Delay(20); // Added by AGB - fixes weird timing bug
+
             /* Stop transmission */
             enc_bfcgreg(ENC_ECON1, ECON1_TXRTS);