diff --git a/data/scene/lodglobes/lodmars/lodmars.mod b/data/scene/lodglobes/lodmars/lodmars.mod
index af6d90cf05..1dbec6fb7b 100644
--- a/data/scene/lodglobes/lodmars/lodmars.mod
+++ b/data/scene/lodglobes/lodmars/lodmars.mod
@@ -62,12 +62,12 @@ return {
                         Name = "Layered Rock Outcrops in Southwest Candor Chasma",
                         FilePath = "map_datasets/HiRISE/Layered_Rock_Outcrops_in_Southwest_Candor_Chasma_Texture.vrt",
                     },
-                    --[[
                     {
                         Name = "CTX Mosaic",
                         FilePath = "map_service_configs/CTX_Mosaic.xml",
                         Enabled = true,
                     },
+                    --[[
                     {
                         Name = "West Candor Chasma",
                         FilePath = "map_datasets/CTX/West_Candor_Chasma_longlat_global.vrt",
@@ -112,7 +112,7 @@ return {
                         MinimumPixelSize = 64,
                         DoPreProcessing = true,
                     },
-                    
+--]]                    
                     {
                         Name = "Mola Elevation",
                         FilePath = "map_service_configs/Mola_Elevation.xml",
@@ -120,7 +120,7 @@ return {
                         MinimumPixelSize = 90,
                         DoPreProcessing = true,
                     },
-                    {
+--[[                    {
                         Name = "West Candor Chasma",
                         FilePath = "map_datasets/CTX/West_Candor_Chasma_DEM_longlat_global.vrt",
                         --Enabled = true,
diff --git a/data/scene/lodglobes/lodmars/map_service_configs/CTX_Mosaic.xml b/data/scene/lodglobes/lodmars/map_service_configs/CTX_Mosaic.xml
index 423bd07e9d..5f78a14098 100644
--- a/data/scene/lodglobes/lodmars/map_service_configs/CTX_Mosaic.xml
+++ b/data/scene/lodglobes/lodmars/map_service_configs/CTX_Mosaic.xml
@@ -1,6 +1,6 @@
 <GDAL_WMS>
   <Service name="TiledWMS">
-    <ServerUrl>http://192.168.1.167/OnMars/wms.cgi?</ServerUrl>
+    <ServerUrl>http://wms.itn.liu.se/OnMars/wms.cgi?</ServerUrl>
     <TiledGroupName>CTX Mosaic</TiledGroupName>
     <Transparent>TRUE</Transparent>
   </Service>
@@ -12,10 +12,10 @@
     <BlockSizeX>256</BlockSizeX>
     <BlockSizeY>256</BlockSizeY>
   </DataWindow>
-  <Cache>
+<!--   <Cache>
     <Path>./GDAL_CTX_cache</Path>
     <Depth>10</Depth>
     <Extension>.png</Extension>
   </Cache>
-  <OfflineMode>true</OfflineMode>
-</GDAL_WMS>
\ No newline at end of file
+  <OfflineMode>false</OfflineMode>
+ --></GDAL_WMS>
\ No newline at end of file
diff --git a/data/scene/lodglobes/lodmars/map_service_configs/Mola_Elevation.xml b/data/scene/lodglobes/lodmars/map_service_configs/Mola_Elevation.xml
index b79223c4af..ca5e83a09d 100644
--- a/data/scene/lodglobes/lodmars/map_service_configs/Mola_Elevation.xml
+++ b/data/scene/lodglobes/lodmars/map_service_configs/Mola_Elevation.xml
@@ -1,6 +1,6 @@
 <GDAL_WMS>
   <Service name="TiledWMS">
-    <ServerUrl>http://192.168.1.167/OnMars/wms.cgi?</ServerUrl>
+    <ServerUrl>http://wms.itn.liu.se/OnMars/wms.cgi?</ServerUrl>
     <TiledGroupName>Mola Elevation</TiledGroupName>
   </Service>
   <DataWindow>
diff --git a/modules/globebrowsing/shaders/texturetilemapping.hglsl b/modules/globebrowsing/shaders/texturetilemapping.hglsl
index 0e074fbad0..ffc8e8ebf8 100644
--- a/modules/globebrowsing/shaders/texturetilemapping.hglsl
+++ b/modules/globebrowsing/shaders/texturetilemapping.hglsl
@@ -75,7 +75,7 @@
 float performLayerSettings(float currentValue, const LayerSettings settings) {
 	float newValue = currentValue;
 
-	newValue = sign(newValue) * pow(newValue, settings.gamma);
+	newValue = sign(newValue) * pow(abs(newValue), settings.gamma);
 	newValue = newValue * settings.multiplier;
 	newValue = newValue * settings.opacity;
 
@@ -129,7 +129,7 @@ float calculateHeight(
 #if !HEIGHTMAP_BLENDING_ENABLED
 	levelWeights = getDefaultLevelWeights();
 #endif // HEIGHTMAP_BLENDING_ENABLED
-	
+
 	
 	#for i in 0..#{lastLayerIndexHeightLayers}
 	{