diff --git a/src/systemcmds/tests/test_sensors.c b/src/systemcmds/tests/test_sensors.c
index a4f17eebde..e005bf9c12 100644
--- a/src/systemcmds/tests/test_sensors.c
+++ b/src/systemcmds/tests/test_sensors.c
@@ -331,7 +331,7 @@ mag(int argc, char *argv[])
 
 	float len = sqrtf(buf.x * buf.x + buf.y * buf.y + buf.z * buf.z);
 
-	if (len < 1.0f || len > 3.0f) {
+	if (len < 0.25f || len > 3.0f) {
 		warnx("MAG scale error!");
 		return ERROR;
 	}