diff --git a/src/pocketmine/Player.php b/src/pocketmine/Player.php
index 474f397d0..c113d27cb 100644
--- a/src/pocketmine/Player.php
+++ b/src/pocketmine/Player.php
@@ -1743,20 +1743,19 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 	 *
 	 * @param Vector3 $pos
 	 * @param         $maxDistance
-	 * @param float   $maxDiff default 0.71 (approximately sqrt(2) / 2, half of the diagonal width of a block)
 	 *
 	 * @return bool
 	 */
-	public function canInteract(Vector3 $pos, $maxDistance, float $maxDiff = 0.71) : bool{
+	public function canInteract(Vector3 $pos, $maxDistance) : bool{
 		$eyePos = $this->getPosition()->add(0, $this->getEyeHeight(), 0);
 		if($eyePos->distanceSquared($pos) > $maxDistance ** 2){
 			return false;
 		}
 
-		$dV = $this->getDirectionPlane();
-		$dot = $dV->dot(new Vector2($eyePos->x, $eyePos->z));
-		$dot1 = $dV->dot(new Vector2($pos->x, $pos->z));
-		return ($dot1 - $dot) >= -$maxDiff;
+		$dV = $this->getDirectionVector();
+		$eyeDot = $dV->dot($eyePos);
+		$targetDot = $dV->dot($pos);
+		return ($targetDot - $eyeDot) >= 0;
 	}
 
 	protected function initHumanData(){