diff --git a/code/modules/maps/planet_types/grass.dm b/code/modules/maps/planet_types/grass.dm
index cd8965cbad3..c6b6ea92d22 100644
--- a/code/modules/maps/planet_types/grass.dm
+++ b/code/modules/maps/planet_types/grass.dm
@@ -21,7 +21,6 @@
 /obj/effect/overmap/visitable/sector/exoplanet/grass/generate_atmosphere()
 	..()
 	if(atmosphere)
-		atmosphere.adjust_gas(GAS_CHLORINE, MOLES_O2STANDARD)
 		atmosphere.temperature = T20C + rand(10, 30)
 		atmosphere.update_values()
 
diff --git a/html/changelogs/alberyk-gasfix.yml b/html/changelogs/alberyk-gasfix.yml
new file mode 100644
index 00000000000..0339c794493
--- /dev/null
+++ b/html/changelogs/alberyk-gasfix.yml
@@ -0,0 +1,6 @@
+author: Alberyk
+
+delete-after: True
+
+changes:
+  - bugfix: "Grass planets and derivatives no longer have a chlorine atmosphere."