diff --git a/src/world/format/io/ChunkUtils.php b/src/world/format/io/ChunkUtils.php
index 9c8ab9893b..9e12ea8332 100644
--- a/src/world/format/io/ChunkUtils.php
+++ b/src/world/format/io/ChunkUtils.php
@@ -32,6 +32,7 @@ class ChunkUtils{
 	 * Converts pre-MCPE-1.0 biome color array to biome ID array.
 	 *
 	 * @param int[] $array of biome color values
+	 * @phpstan-param array<int, int> $array
 	 */
 	public static function convertBiomeColors(array $array) : string{
 		$result = str_repeat("\x00", 256);
diff --git a/tests/phpstan/configs/l7-baseline.neon b/tests/phpstan/configs/l7-baseline.neon
index 1d56afcfa5..ec3ff969a8 100644
--- a/tests/phpstan/configs/l7-baseline.neon
+++ b/tests/phpstan/configs/l7-baseline.neon
@@ -1020,11 +1020,6 @@ parameters:
 			count: 2
 			path: ../../../src/world/format/Chunk.php
 
-		-
-			message: "#^Method pocketmine\\\\world\\\\format\\\\io\\\\ChunkUtils\\:\\:convertBiomeColors\\(\\) should return string but returns array\\<string\\>\\|string\\.$#"
-			count: 1
-			path: ../../../src/world/format/io/ChunkUtils.php
-
 		-
 			message: "#^Parameter \\#1 \\$className of static method pocketmine\\\\utils\\\\Utils\\:\\:testValidInstance\\(\\) expects class\\-string, string given\\.$#"
 			count: 1