diff --git a/src/main/java/twilightforest/world/layer/GenLayerTFRiverMix.java b/src/main/java/twilightforest/world/layer/GenLayerTFRiverMix.java
index d97431d1a5..9999531d74 100644
--- a/src/main/java/twilightforest/world/layer/GenLayerTFRiverMix.java
+++ b/src/main/java/twilightforest/world/layer/GenLayerTFRiverMix.java
@@ -37,7 +37,7 @@ public int[] getInts(int par1, int par2, int par3, int par4) {
 
         for (int i = 0; i < par3 * par4; ++i) {
             if (riverInputs[i] == TFBiomeBase.stream.biomeID) {
-                outputs[i] = riverInputs[i] & 255;
+                outputs[i] = riverInputs[i] & 32767;
             } else {
                 outputs[i] = biomeInputs[i];
             }