diff --git a/src/main/java/de/ellpeck/actuallyadditions/mod/fluids/FluidAA.java b/src/main/java/de/ellpeck/actuallyadditions/mod/fluids/FluidAA.java
index c1bd9b6ff..7c0922dd2 100644
--- a/src/main/java/de/ellpeck/actuallyadditions/mod/fluids/FluidAA.java
+++ b/src/main/java/de/ellpeck/actuallyadditions/mod/fluids/FluidAA.java
@@ -17,7 +17,7 @@ import net.minecraftforge.fluids.Fluid;
 public class FluidAA extends Fluid{
 
     public FluidAA(String fluidName, String textureName){
-        super(fluidName, new ResourceLocation(ModUtil.MOD_ID, "blocks/"+textureName+"Still"), new ResourceLocation(ModUtil.MOD_ID, "blocks/"+textureName+"Flowing"));
+        super(fluidName, new ResourceLocation(ModUtil.MOD_ID, "blocks/"+textureName+"still"), new ResourceLocation(ModUtil.MOD_ID, "blocks/"+textureName+"flowing"));
     }
 
     @Override
diff --git a/src/main/java/de/ellpeck/actuallyadditions/mod/fluids/InitFluids.java b/src/main/java/de/ellpeck/actuallyadditions/mod/fluids/InitFluids.java
index dd09fcbba..915bb4847 100644
--- a/src/main/java/de/ellpeck/actuallyadditions/mod/fluids/InitFluids.java
+++ b/src/main/java/de/ellpeck/actuallyadditions/mod/fluids/InitFluids.java
@@ -44,7 +44,7 @@ public final class InitFluids{
     }
 
     private static Fluid registerFluid(String fluidName, String fluidTextureName, EnumRarity rarity){
-        Fluid fluid = new FluidAA(fluidName.toLowerCase(Locale.ROOT), fluidTextureName).setRarity(rarity);
+        Fluid fluid = new FluidAA(fluidName.toLowerCase(Locale.ROOT), fluidTextureName.toLowerCase(Locale.ROOT)).setRarity(rarity);
         FluidRegistry.registerFluid(fluid);
         FluidRegistry.addBucketForFluid(fluid);
 
diff --git a/src/main/java/de/ellpeck/actuallyadditions/mod/items/ItemAllToolAA.java b/src/main/java/de/ellpeck/actuallyadditions/mod/items/ItemAllToolAA.java
index 82a73cecf..3f9ed901a 100644
--- a/src/main/java/de/ellpeck/actuallyadditions/mod/items/ItemAllToolAA.java
+++ b/src/main/java/de/ellpeck/actuallyadditions/mod/items/ItemAllToolAA.java
@@ -58,7 +58,7 @@ public class ItemAllToolAA extends ItemToolAA implements IColorProvidingItem{
 
     @Override
     protected void registerRendering(){
-        ResourceLocation resLoc = new ResourceLocation(ModUtil.MOD_ID, "itemPaxel");
+        ResourceLocation resLoc = new ResourceLocation(ModUtil.MOD_ID, "itempaxel");
         ActuallyAdditions.proxy.addRenderRegister(new ItemStack(this), resLoc, "inventory");
     }
 
diff --git a/src/main/java/de/ellpeck/actuallyadditions/mod/misc/DungeonLoot.java b/src/main/java/de/ellpeck/actuallyadditions/mod/misc/DungeonLoot.java
index e9842e6fa..1b47bace9 100644
--- a/src/main/java/de/ellpeck/actuallyadditions/mod/misc/DungeonLoot.java
+++ b/src/main/java/de/ellpeck/actuallyadditions/mod/misc/DungeonLoot.java
@@ -31,8 +31,8 @@ import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 
 public class DungeonLoot{
 
-    public static final ResourceLocation JAM_HOUSE = new ResourceLocation(ModUtil.MOD_ID, "jamHouse");
-    public static final ResourceLocation LUSH_CAVES = new ResourceLocation(ModUtil.MOD_ID, "lushCaves");
+    public static final ResourceLocation JAM_HOUSE = new ResourceLocation(ModUtil.MOD_ID, "jamhouse");
+    public static final ResourceLocation LUSH_CAVES = new ResourceLocation(ModUtil.MOD_ID, "lushcaves");
 
     public DungeonLoot(){
         LootTableList.register(JAM_HOUSE);
diff --git a/src/main/java/de/ellpeck/actuallyadditions/mod/misc/SoundHandler.java b/src/main/java/de/ellpeck/actuallyadditions/mod/misc/SoundHandler.java
index 8b88c32c3..e4353d73f 100644
--- a/src/main/java/de/ellpeck/actuallyadditions/mod/misc/SoundHandler.java
+++ b/src/main/java/de/ellpeck/actuallyadditions/mod/misc/SoundHandler.java
@@ -14,6 +14,8 @@ import de.ellpeck.actuallyadditions.mod.util.ModUtil;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.SoundEvent;
 
+import java.util.Locale;
+
 public final class SoundHandler{
 
     public static SoundEvent duhDuhDuhDuuuh;
@@ -33,7 +35,7 @@ public final class SoundHandler{
     }
 
     private static SoundEvent registerSound(String name){
-        ResourceLocation resLoc = new ResourceLocation(ModUtil.MOD_ID, name);
+        ResourceLocation resLoc = new ResourceLocation(ModUtil.MOD_ID, name.toLowerCase(Locale.ROOT));
 
         SoundEvent event = new SoundEvent(resLoc);
         SoundEvent.REGISTRY.register(size, resLoc, event);
diff --git a/src/main/java/de/ellpeck/actuallyadditions/mod/proxy/ClientProxy.java b/src/main/java/de/ellpeck/actuallyadditions/mod/proxy/ClientProxy.java
index 518a077d9..f8b62daee 100644
--- a/src/main/java/de/ellpeck/actuallyadditions/mod/proxy/ClientProxy.java
+++ b/src/main/java/de/ellpeck/actuallyadditions/mod/proxy/ClientProxy.java
@@ -34,10 +34,7 @@ import net.minecraftforge.fml.common.event.FMLInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
 
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 
 public class ClientProxy implements IProxy{
 
@@ -110,7 +107,8 @@ public class ClientProxy implements IProxy{
 
     @Override
     public void addRenderRegister(ItemStack stack, ResourceLocation location, String variant){
-        MODEL_LOCATIONS_FOR_REGISTERING.put(stack, new ModelResourceLocation(location, variant));
+        ResourceLocation lowerLocation = new ResourceLocation(location.toString().toLowerCase(Locale.ROOT));
+        MODEL_LOCATIONS_FOR_REGISTERING.put(stack, new ModelResourceLocation(lowerLocation, variant));
     }
 
     @Override
diff --git a/src/main/java/de/ellpeck/actuallyadditions/mod/util/AssetUtil.java b/src/main/java/de/ellpeck/actuallyadditions/mod/util/AssetUtil.java
index a420b9e68..2dc681008 100644
--- a/src/main/java/de/ellpeck/actuallyadditions/mod/util/AssetUtil.java
+++ b/src/main/java/de/ellpeck/actuallyadditions/mod/util/AssetUtil.java
@@ -34,16 +34,18 @@ import net.minecraftforge.fml.relauncher.Side;
 import net.minecraftforge.fml.relauncher.SideOnly;
 import org.lwjgl.opengl.GL11;
 
+import java.util.Locale;
+
 public final class AssetUtil{
 
     public static final ResourceLocation GUI_INVENTORY_LOCATION = getGuiLocation("guiInventory");
 
     public static ResourceLocation getGuiLocation(String file){
-        return new ResourceLocation(ModUtil.MOD_ID, "textures/gui/"+file+".png");
+        return new ResourceLocation(ModUtil.MOD_ID, "textures/gui/"+file.toLowerCase(Locale.ROOT)+".png");
     }
 
     public static ResourceLocation getBookletGuiLocation(String file){
-        return new ResourceLocation(ModUtil.MOD_ID, "textures/gui/booklet/"+file+".png");
+        return getGuiLocation("booklet/"+file);
     }
 
     @SideOnly(Side.CLIENT)
diff --git a/src/main/java/de/ellpeck/actuallyadditions/mod/util/FluidStateMapper.java b/src/main/java/de/ellpeck/actuallyadditions/mod/util/FluidStateMapper.java
index 1112b9373..607ff5417 100644
--- a/src/main/java/de/ellpeck/actuallyadditions/mod/util/FluidStateMapper.java
+++ b/src/main/java/de/ellpeck/actuallyadditions/mod/util/FluidStateMapper.java
@@ -35,7 +35,6 @@ public class FluidStateMapper extends StateMapperBase implements ItemMeshDefinit
         this.location = new ModelResourceLocation(new ResourceLocation(ModUtil.MOD_ID, "fluids"), fluid.getName());
     }
 
-
     @Override
     protected ModelResourceLocation getModelResourceLocation(IBlockState state){
         return this.location;