diff --git a/src/pocketmine/level/ChunkManager.php b/src/pocketmine/level/ChunkManager.php
index b40dd9fcd..5725a34e9 100644
--- a/src/pocketmine/level/ChunkManager.php
+++ b/src/pocketmine/level/ChunkManager.php
@@ -88,5 +88,5 @@ interface ChunkManager{
 	 *
 	 * @return int
 	 */
-	public function getSeed() : int;
+	public function getSeed();
 }
\ No newline at end of file
diff --git a/src/pocketmine/level/SimpleChunkManager.php b/src/pocketmine/level/SimpleChunkManager.php
index 136ab9ed1..0de2d6d7a 100644
--- a/src/pocketmine/level/SimpleChunkManager.php
+++ b/src/pocketmine/level/SimpleChunkManager.php
@@ -128,7 +128,7 @@ class SimpleChunkManager implements ChunkManager{
 	 *
 	 * @return int
 	 */
-	public function getSeed() : int{
+	public function getSeed() {
 		return $this->seed;
 	}
 }
\ No newline at end of file