diff --git a/src/pocketmine/level/biome/PlainBiome.php b/src/pocketmine/level/biome/PlainBiome.php
index d9d303c39..0f927a582 100644
--- a/src/pocketmine/level/biome/PlainBiome.php
+++ b/src/pocketmine/level/biome/PlainBiome.php
@@ -35,7 +35,7 @@ class PlainBiome extends GrassyBiome{
 
 		$this->addPopulator($tallGrass);
 
-		$this->setElevation(63, 74);
+		$this->setElevation(63, 68);
 
 		$this->temperature = 0.8;
 		$this->rainfall = 0.4;