diff --git a/src/main/java/biomesoplenty/api/BOPBiomeManager.java b/src/main/java/biomesoplenty/api/BOPBiomeManager.java
index fb7868857..c94fdd563 100644
--- a/src/main/java/biomesoplenty/api/BOPBiomeManager.java
+++ b/src/main/java/biomesoplenty/api/BOPBiomeManager.java
@@ -6,6 +6,7 @@ import java.util.List;
 import net.minecraft.util.WeightedRandom;
 import net.minecraft.world.biome.BiomeGenBase;
 import biomesoplenty.common.configuration.BOPConfigurationBiomeGen;
+import biomesoplenty.common.configuration.BOPConfigurationBiomeWeights;
 import biomesoplenty.common.configuration.BOPConfigurationIDs;
 
 public class BOPBiomeManager 
@@ -23,7 +24,7 @@ public class BOPBiomeManager
 		
 		if (biome != null)
 		{
-			BiomeEntry entry = new BiomeEntry(biome, weight);
+			BiomeEntry entry = new BiomeEntry(biome, getConfiguredWeight(biome, biomeType, weight));
 
 			if (BOPConfigurationBiomeGen.config.get(biomeType + " Biomes To Generate", biome.biomeName, true).getBoolean(false))
 			{
@@ -76,6 +77,11 @@ public class BOPBiomeManager
 		return -1;
 	}
 	
+	private static int getConfiguredWeight(BiomeGenBase biome, String biomeType, int weight)
+	{
+		return BOPConfigurationBiomeWeights.config.get(biomeType + " Biome Weights", biome.biomeName, weight).getInt(weight);
+	}
+	
 	public class TemperatureType
 	{
 		public static final int HOT = 0;
diff --git a/src/main/java/biomesoplenty/common/configuration/BOPConfiguration.java b/src/main/java/biomesoplenty/common/configuration/BOPConfiguration.java
index 3dd3da849..75c46c1f6 100644
--- a/src/main/java/biomesoplenty/common/configuration/BOPConfiguration.java
+++ b/src/main/java/biomesoplenty/common/configuration/BOPConfiguration.java
@@ -7,6 +7,7 @@ public class BOPConfiguration
 	public static File mainConfigFile;
 	public static File worldFeaturesConfigFile;
 	public static File biomeGenConfigFile;
+	public static File biomeWeightsConfigFile;
 	public static File terrainGenConfigFile;
 	public static File villagesConfigFile;
 	public static File strongholdsConfigFile;
@@ -18,6 +19,7 @@ public class BOPConfiguration
 		mainConfigFile = new File(configpath + "main.cfg");
 		worldFeaturesConfigFile = new File(configpath + "worldfeatures.cfg");
 		biomeGenConfigFile = new File(configpath + "biomegen.cfg");
+		biomeWeightsConfigFile = new File(configpath + "biomeweights.cfg");
 		terrainGenConfigFile = new File(configpath + "terraingen.cfg");
 		villagesConfigFile = new File(configpath + "structures/villages.cfg");
 		strongholdsConfigFile = new File(configpath + "structures/strongholds.cfg");
@@ -26,6 +28,7 @@ public class BOPConfiguration
 
 		BOPConfigurationMain.init(mainConfigFile);
 		BOPConfigurationBiomeGen.init(biomeGenConfigFile);
+		BOPConfigurationBiomeWeights.init(biomeWeightsConfigFile);
 		BOPConfigurationTerrainGen.init(terrainGenConfigFile);
 		BOPConfigurationIDs.init(idConfigFile);
 		BOPConfigurationMisc.init(miscConfigFile);
diff --git a/src/main/java/biomesoplenty/common/configuration/BOPConfigurationBiomeWeights.java b/src/main/java/biomesoplenty/common/configuration/BOPConfigurationBiomeWeights.java
new file mode 100644
index 000000000..e6ea87a5c
--- /dev/null
+++ b/src/main/java/biomesoplenty/common/configuration/BOPConfigurationBiomeWeights.java
@@ -0,0 +1,15 @@
+package biomesoplenty.common.configuration;
+
+import java.io.File;
+
+import net.minecraftforge.common.config.Configuration;
+
+public class BOPConfigurationBiomeWeights 
+{
+	public static Configuration config;
+	
+	public static void init(File configFile)
+	{
+		config = new Configuration(configFile);
+	}
+}
diff --git a/src/main/java/biomesoplenty/common/core/BOPBiomes.java b/src/main/java/biomesoplenty/common/core/BOPBiomes.java
index 3c485ff4d..d0af72774 100644
--- a/src/main/java/biomesoplenty/common/core/BOPBiomes.java
+++ b/src/main/java/biomesoplenty/common/core/BOPBiomes.java
@@ -91,6 +91,7 @@ import biomesoplenty.common.biomes.overworld.subbiomes.BiomeGenVolcano;
 import biomesoplenty.common.biomes.overworld.techbiomes.BiomeGenDryRiver;
 import biomesoplenty.common.biomes.overworld.techbiomes.BiomeGenLushRiver;
 import biomesoplenty.common.configuration.BOPConfigurationBiomeGen;
+import biomesoplenty.common.configuration.BOPConfigurationBiomeWeights;
 import biomesoplenty.common.configuration.BOPConfigurationIDs;
 import biomesoplenty.common.configuration.BOPConfigurationMisc;
 import biomesoplenty.common.utils.BOPLogger;
@@ -112,6 +113,7 @@ public class BOPBiomes
         {
         	BOPConfigurationIDs.config.load();
         	BOPConfigurationBiomeGen.config.load();
+        	BOPConfigurationBiomeWeights.config.load();
         	registerBiomes();
         }
         catch (Exception e)
@@ -122,6 +124,7 @@ public class BOPBiomes
         {
         	if (BOPConfigurationIDs.config.hasChanged()) BOPConfigurationIDs.config.save();
         	if (BOPConfigurationBiomeGen.config.hasChanged()) BOPConfigurationBiomeGen.config.save();
+        	if (BOPConfigurationBiomeWeights.config.hasChanged()) BOPConfigurationBiomeWeights.config.save();
         }
 
 		addBiomesToDictionary();