diff --git a/src/target/adiv5_swdp.c b/src/target/adiv5_swdp.c
index d4ba9ebc..9e107c1d 100644
--- a/src/target/adiv5_swdp.c
+++ b/src/target/adiv5_swdp.c
@@ -64,12 +64,12 @@ int adiv5_swdp_scan(void)
 		return -1;
 
 	/* Switch from JTAG to SWD mode */
-	swdptap_seq_out(0xFFFF, 16);
-	for(int i = 0; i < 50; i++)
-		swdptap_bit_out(1);
+	swdptap_seq_out(0xFFFFFFFF, 16);
+	swdptap_seq_out(0xFFFFFFFF, 32);
+	swdptap_seq_out(0xFFFFFFFF, 18);
 	swdptap_seq_out(0xE79E, 16); /* 0b0111100111100111 */
-	for(int i = 0; i < 50; i++)
-		swdptap_bit_out(1);
+	swdptap_seq_out(0xFFFFFFFF, 32);
+	swdptap_seq_out(0xFFFFFFFF, 18);
 	swdptap_seq_out(0, 16);
 
 	/* Read the SW-DP IDCODE register to syncronise */