diff --git a/hardware/fx2lafw/fx2lafw.c b/hardware/fx2lafw/fx2lafw.c
index 488365cd..3bc8eabb 100644
--- a/hardware/fx2lafw/fx2lafw.c
+++ b/hardware/fx2lafw/fx2lafw.c
@@ -538,8 +538,7 @@ static int hw_dev_open(struct sr_dev_inst *sdi)
 			sr_err("Device failed to renumerate.");
 			return SR_ERR;
 		}
-		sr_info("Device came back after %dms.",
-			timediff_ms);
+		sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
 	} else {
 		sr_info("Firmware upload was not needed.");
 		ret = fx2lafw_dev_open(sdi);