diff --git a/j2534/j2534.c b/j2534/j2534.c
index 361e5d1..af5f3ba 100644
--- a/j2534/j2534.c
+++ b/j2534/j2534.c
@@ -1797,6 +1797,18 @@ int32_t PassThruIoctl(const unsigned long ChannelID, const unsigned long ioctlID
 
 		r = LIBUSB_SUCCESS;
 	}
+	if (ioctlID == J2534_CLEAR_MSG_FILTERS)
+	{
+		// TODO: this would be good to have
+		if (write_log)
+			writelog("[CLEAR_MSG_FILTERS]\n");
+		// atk5 -1 4
+		// unsure what the 5 is - protocol ID? channel ID?
+		// 4 is command sequence number - seems to be optional
+		snprintf(data, MAX_LEN, "atk%lu -1\r\n", ChannelID);
+		// setting NULL for expected reply accepts an "aro" which is the norm
+		r = usb_send_expect(data, strlen(data), MAX_LEN, 2000, NULL);
+	}
 
 	EXIT_IOCTL:
 	if (write_log)