diff --git a/src/drivers/sf0x/sf0x.cpp b/src/drivers/sf0x/sf0x.cpp
index 431184d0462..7861c0596bb 100644
--- a/src/drivers/sf0x/sf0x.cpp
+++ b/src/drivers/sf0x/sf0x.cpp
@@ -854,7 +854,7 @@ test()
 	}
 
 	warnx("single read");
-	warnx("val:  %0.2f m", (double)report.current_distance);
+	warnx("measurement:  %0.2f m", (double)report.current_distance);
 	warnx("time: %llu", report.timestamp);
 
 	/* start the sensor polling at 2 Hz rate */
@@ -885,7 +885,9 @@ test()
 		}
 
 		warnx("read #%u", i);
-		warnx("val:  %0.3f m", (double)report.current_distance);
+		warnx("valid %u", (float)report.current_distance > report.min_distance
+			&& (float)report.current_distance < report.max_distance ? 1 : 0);
+		warnx("measurement:  %0.3f m", (double)report.current_distance);
 		warnx("time: %llu", report.timestamp);
 	}