diff --git a/gecko-core/src/test/java/gecko/TextCompressorGzipTest.kt b/gecko-core/src/test/java/gecko/TextCompressorGzipTest.kt
index 1c4220e..77ebdce 100644
--- a/gecko-core/src/test/java/gecko/TextCompressorGzipTest.kt
+++ b/gecko-core/src/test/java/gecko/TextCompressorGzipTest.kt
@@ -20,7 +20,32 @@ internal class TextCompressorGzipTest : TestBlueprint {
         val output = compressor.compress("hello world!".encodeToByteArray())
         assertThat(output).isEqualTo(
             byteArrayOf(
-                31, -117, 8, 0, 0, 0, 0, 0, 0, 0, -53, 72, -51, -55, -55, 87, 40, -49, 47, -54, 73, 81, 4, 0, 109, -62,
+                31,
+                -117,
+                8,
+                0,
+                0,
+                0,
+                0,
+                0,
+                0,
+                -1,
+                -53,
+                72,
+                -51,
+                -55,
+                -55,
+                87,
+                40,
+                -49,
+                47,
+                -54,
+                73,
+                81,
+                4,
+                0,
+                109,
+                -62,
                 -76, 3, 12, 0, 0, 0
             )
         )
diff --git a/gecko-core/src/test/java/gecko/model/decorator/ByteDataCompressionDecoratorTest.kt b/gecko-core/src/test/java/gecko/model/decorator/ByteDataCompressionDecoratorTest.kt
index ab98c7d..184caea 100644
--- a/gecko-core/src/test/java/gecko/model/decorator/ByteDataCompressionDecoratorTest.kt
+++ b/gecko-core/src/test/java/gecko/model/decorator/ByteDataCompressionDecoratorTest.kt
@@ -19,7 +19,30 @@ internal class ByteDataCompressionDecoratorTest {
     fun `compresses data`() {
         assertThat(data.value).isEqualTo(
             byteArrayOf(
-                31, -117, 8, 0, 0, 0, 0, 0, 0, 0, 75, 76, 76, 76, 4, 0, 69, -27, -104, -83, 4, 0, 0, 0
+                31,
+                -117,
+                8,
+                0,
+                0,
+                0,
+                0,
+                0,
+                0,
+                -1,
+                75,
+                76,
+                76,
+                76,
+                4,
+                0,
+                69,
+                -27,
+                -104,
+                -83,
+                4,
+                0,
+                0,
+                0
             )
         )
     }