diff --git a/include/bluetooth/conn.h b/include/bluetooth/conn.h
index afeaa7bacf9..8c6df6d28e9 100644
--- a/include/bluetooth/conn.h
+++ b/include/bluetooth/conn.h
@@ -751,6 +751,9 @@ enum bt_security_err {
 	/** Invalid parameters. */
 	BT_SECURITY_ERR_INVALID_PARAM,
 
+	/** Distributed Key Rejected */
+	BT_SECURITY_ERR_KEY_REJECTED,
+
 	/** Pairing failed but the exact reason could not be specified. */
 	BT_SECURITY_ERR_UNSPECIFIED,
 };
diff --git a/subsys/bluetooth/host/smp.c b/subsys/bluetooth/host/smp.c
index 3cdbc537b70..c879f88d00a 100644
--- a/subsys/bluetooth/host/smp.c
+++ b/subsys/bluetooth/host/smp.c
@@ -430,6 +430,8 @@ static enum bt_security_err security_err_get(uint8_t smp_err)
 		return BT_SECURITY_ERR_PAIR_NOT_ALLOWED;
 	case BT_SMP_ERR_INVALID_PARAMS:
 		return BT_SECURITY_ERR_INVALID_PARAM;
+	case BT_SMP_ERR_KEY_REJECTED:
+		return BT_SECURITY_ERR_KEY_REJECTED;
 	case BT_SMP_ERR_UNSPECIFIED:
 	default:
 		return BT_SECURITY_ERR_UNSPECIFIED;
diff --git a/subsys/bluetooth/host/smp.h b/subsys/bluetooth/host/smp.h
index 6660f76bb20..e1f20094bc4 100644
--- a/subsys/bluetooth/host/smp.h
+++ b/subsys/bluetooth/host/smp.h
@@ -27,6 +27,7 @@ struct bt_smp_hdr {
 #define BT_SMP_ERR_NUMERIC_COMP_FAILED		0x0c
 #define BT_SMP_ERR_BREDR_PAIRING_IN_PROGRESS	0x0d
 #define BT_SMP_ERR_CROSS_TRANSP_NOT_ALLOWED	0x0e
+#define BT_SMP_ERR_KEY_REJECTED			0x0f
 
 #define BT_SMP_IO_DISPLAY_ONLY			0x00
 #define BT_SMP_IO_DISPLAY_YESNO			0x01