diff --git a/src/platforms/hosted/stlinkv2.c b/src/platforms/hosted/stlinkv2.c
index 1ecae9f..f87ffc8 100644
--- a/src/platforms/hosted/stlinkv2.c
+++ b/src/platforms/hosted/stlinkv2.c
@@ -1010,7 +1010,7 @@ int jtag_scan_stlinkv2(bmp_info_t *info, const uint8_t *irlens)
 			if((jtag_devs[i].jd_idcode & dev_descr[j].idmask) ==
 			   dev_descr[j].idcode) {
 				if(dev_descr[j].handler)
-					dev_descr[j].handler(i, dev_descr[j].idcode);
+					dev_descr[j].handler(i);
 				break;
 			}
 
diff --git a/src/target/adiv5.h b/src/target/adiv5.h
index bcaa192..189869b 100644
--- a/src/target/adiv5.h
+++ b/src/target/adiv5.h
@@ -285,7 +285,7 @@ void adiv5_ap_ref(ADIv5_AP_t *ap);
 void adiv5_ap_unref(ADIv5_AP_t *ap);
 void platform_add_jtag_dev(const int dev_index, const jtag_dev_t *jtag_dev);
 
-void adiv5_jtag_dp_handler(uint8_t jd_index, uint32_t j_idcode);
+void adiv5_jtag_dp_handler(uint8_t jd_index);
 int platform_jtag_dp_init(ADIv5_DP_t *dp);
 int swdptap_init(ADIv5_DP_t *dp);
 
diff --git a/src/target/adiv5_jtagdp.c b/src/target/adiv5_jtagdp.c
index e4f3030..cf8591b 100644
--- a/src/target/adiv5_jtagdp.c
+++ b/src/target/adiv5_jtagdp.c
@@ -39,14 +39,13 @@
 
 static uint32_t adiv5_jtagdp_error(ADIv5_DP_t *dp);
 
-void adiv5_jtag_dp_handler(uint8_t jd_index, uint32_t j_idcode)
+void adiv5_jtag_dp_handler(uint8_t jd_index)
 {
 	ADIv5_DP_t *dp = (void*)calloc(1, sizeof(*dp));
 	if (!dp) {			/* calloc failed: heap exhaustion */
 		DEBUG_WARN("calloc: failed in %s\n", __func__);
 		return;
 	}
-	(void)j_idcode;
 
 	dp->dp_jd_index = jd_index;
 	dp->idcode = jtag_devs[jd_index].jd_idcode;
diff --git a/src/target/jtag_devs.h b/src/target/jtag_devs.h
index 8c2c0b5..08adf04 100644
--- a/src/target/jtag_devs.h
+++ b/src/target/jtag_devs.h
@@ -22,7 +22,7 @@ typedef const struct jtag_dev_descr_s {
 	const uint32_t idcode;
 	const uint32_t idmask;
 	const char * const descr;
-	void (*const handler)(uint8_t jd_index, uint32_t j_idcode);
+	void (*const handler)(uint8_t jd_index);
 } jtag_dev_descr_t;
 extern jtag_dev_descr_t dev_descr[];
 
diff --git a/src/target/jtag_scan.c b/src/target/jtag_scan.c
index 761f5ff..c547ef6 100644
--- a/src/target/jtag_scan.c
+++ b/src/target/jtag_scan.c
@@ -215,7 +215,7 @@ int jtag_scan(const uint8_t *irlens)
 				jtag_devs[i].jd_descr = dev_descr[j].descr;
 				/* Call handler to initialise/probe device further */
 				if(dev_descr[j].handler)
-					dev_descr[j].handler(i, dev_descr[i].idcode);
+					dev_descr[j].handler(i);
 				break;
 			}