diff --git a/src/mapgen/mg_biome.cpp b/src/mapgen/mg_biome.cpp
index a6ee41179..42f762709 100644
--- a/src/mapgen/mg_biome.cpp
+++ b/src/mapgen/mg_biome.cpp
@@ -142,7 +142,7 @@ Biome *BiomeManager::getBiomeFromNoiseOriginal(float heat, float humidity, v3s16
 		}
 	}
 
-	mysrand(pos.Y + (heat + humidity) / 2);
+	mysrand(pos.Y + (heat + humidity) * 0.9f);
 	if (biome_closest_blend && dist_min_blend <= dist_min &&
 			myrand_range(0, biome_closest_blend->vertical_blend) >=
 			pos.Y - biome_closest_blend->max_pos.Y)
@@ -302,7 +302,7 @@ Biome *BiomeGenOriginal::calcBiomeFromNoise(float heat, float humidity, v3s16 po
 	// Carefully tune pseudorandom seed variation to avoid single node dither
 	// and create larger scale blending patterns similar to horizontal biome
 	// blend.
-	mysrand(pos.Y + (heat + humidity) / 2);
+	mysrand(pos.Y + (heat + humidity) * 0.9f);
 
 	if (biome_closest_blend && dist_min_blend <= dist_min &&
 			myrand_range(0, biome_closest_blend->vertical_blend) >=