diff --git a/mars.txt b/mars.txt
index 175aac02eb577d11a6c1d00dc0a0ad7816fedd68..d4277ed7e8e85f247f0a3a62fa8f77e478e7a2e1 100644
--- a/mars.txt
+++ b/mars.txt
@@ -1,2 +1,3 @@
 Cold and dry, but everything is my favourite colour
 two moons
+lack of humidity