diff --git a/data/missions/advanced/Endurance/endurance.mis b/data/missions/advanced/Endurance/endurance.mis
index 934c1c0c..1a11140d 100644
--- a/data/missions/advanced/Endurance/endurance.mis
+++ b/data/missions/advanced/Endurance/endurance.mis
@@ -16,7 +16,7 @@ new SimGroup(MissionGroup) {
       rotation = "1 0 0 0";
       scale = "1 1 1";
       hidden = "0";
-      materialList = "~/data/skies/sky_advanced.dml";
+      materialList = "~/data/skies/sky_beginner.dml";
       cloudHeightPer[0] = "0";
       cloudHeightPer[1] = "0";
       cloudHeightPer[2] = "0";
diff --git a/data/missions/intermediate/Obstacle Course/obstacle.mis b/data/missions/intermediate/Obstacle Course/obstacle.mis
index 14dca387..ab7dd850 100644
--- a/data/missions/intermediate/Obstacle Course/obstacle.mis	
+++ b/data/missions/intermediate/Obstacle Course/obstacle.mis	
@@ -24,7 +24,7 @@ new SimGroup(MissionGroup) {
       rotation = "1 0 0 0";
       scale = "1 1 1";
       hidden = "0";
-      materialList = "~/data/skies/sky_intermediate.dml";
+      materialList = "~/data/skies/sky_advanced.dml";
       cloudHeightPer[0] = "0";
       cloudHeightPer[1] = "0";
       cloudHeightPer[2] = "0";
diff --git a/data/missions/intermediate/Whirl/whirl.mis b/data/missions/intermediate/Whirl/whirl.mis
index 4cc53219..37f5d4fd 100644
--- a/data/missions/intermediate/Whirl/whirl.mis
+++ b/data/missions/intermediate/Whirl/whirl.mis
@@ -25,7 +25,7 @@ new SimGroup(MissionGroup) {
       rotation = "1 0 0 0";
       scale = "1 1 1";
       hidden = "0";
-      materialList = "~/data/skies/sky_intermediate.dml";
+      materialList = "~/data/skies/sky_advanced.dml";
       cloudHeightPer[0] = "0";
       cloudHeightPer[1] = "0";
       cloudHeightPer[2] = "0";