diff --git a/tests/Tests/System/SystemTests.cs b/tests/Tests/System/SystemTests.cs
index 625a15e..e33b6f8 100644
--- a/tests/Tests/System/SystemTests.cs
+++ b/tests/Tests/System/SystemTests.cs
@@ -29,7 +29,7 @@ public async Task CreateImageNowForOpenHabAndScreenshotCreatorBothRunningInDocke
         result.Should().HaveStatusCode(HttpStatusCode.OK);
         result.Content.Headers.ContentType.Should().NotBeNull();
         result.Content.Headers.ContentType!.MediaType.Should().Be("image/png");
-        (await result.Content.ReadAsByteArrayAsync()).Length.Should().BeInRange(10000, 15000);
+        (await result.Content.ReadAsByteArrayAsync()).Length.Should().BeInRange(9000, 15000);
         logValues.Stdout.Should().NotContain("warn:");
     }
 
@@ -95,4 +95,4 @@ private static IContainer BuildScreenshotCreatorContainer(INetwork network) =>
 
     private static Uri GetScreenshotCreatorBaseAddress(IContainer screenshotCreatorContainer) =>
         new($"http://{screenshotCreatorContainer.Hostname}:{screenshotCreatorContainer.GetMappedPublicPort(8080)}/screenshotCreator");
-}
\ No newline at end of file
+}