diff --git a/src/pocketmine/item/Tool.php b/src/pocketmine/item/Tool.php
index 5d995379e..55e74e601 100644
--- a/src/pocketmine/item/Tool.php
+++ b/src/pocketmine/item/Tool.php
@@ -25,6 +25,7 @@ namespace pocketmine\item;
 
 use pocketmine\block\Block;
 use pocketmine\entity\Entity;
+use pocketmine\item\enchantment\Enchantment;
 
 abstract class Tool extends Durable{
 
@@ -71,7 +72,9 @@ abstract class Tool extends Durable{
 		$efficiency = 1;
 		if(($block->getToolType() & $this->getBlockToolType()) !== 0){
 			$efficiency = $this->getBaseMiningEfficiency();
-			//TODO: check Efficiency enchantment
+			if(($enchantmentLevel = $this->getEnchantmentLevel(Enchantment::EFFICIENCY)) > 0){
+				$efficiency += ($enchantmentLevel ** 2 + 1);
+			}
 		}
 
 		return $efficiency;
diff --git a/src/pocketmine/item/enchantment/Enchantment.php b/src/pocketmine/item/enchantment/Enchantment.php
index 2cdb5aeef..e87c78e29 100644
--- a/src/pocketmine/item/enchantment/Enchantment.php
+++ b/src/pocketmine/item/enchantment/Enchantment.php
@@ -93,6 +93,8 @@ class Enchantment{
 		self::registerEnchantment(new Enchantment(self::FEATHER_FALLING, "%enchantment.protect.fall", self::RARITY_UNCOMMON, self::SLOT_FEET, 4));
 
 		self::registerEnchantment(new Enchantment(self::RESPIRATION, "%enchantment.oxygen", self::RARITY_RARE, self::SLOT_HEAD, 3));
+
+		self::registerEnchantment(new Enchantment(self::EFFICIENCY, "%enchantment.digging", self::RARITY_COMMON, self::SLOT_DIG | self::SLOT_SHEARS, 5));
 	}
 
 	/**