diff --git a/firmware/libboard/common/source/board_lowlevel.c b/firmware/libboard/common/source/board_lowlevel.c
index 8210938..b4d7d32 100644
--- a/firmware/libboard/common/source/board_lowlevel.c
+++ b/firmware/libboard/common/source/board_lowlevel.c
@@ -127,6 +127,9 @@
 	SUPC->SUPC_SMMR = SUPC_SMMR_SMTH_3_0V | SUPC_SMMR_SMSMPL_CSM |
 	    	      SUPC_SMMR_SMRSTEN_ENABLE;
 
+	/* disable ERASE pin to prevent accidental flash erase */
+	MATRIX->CCFG_SYSIO |= CCFG_SYSIO_SYSIO12;
+
 	/* enable both LED and green LED */
 	PIOA->PIO_PER |= PIO_LED_RED | PIO_LED_GREEN;
 	PIOA->PIO_OER |= PIO_LED_RED | PIO_LED_GREEN;