diff --git a/test_runner/src/main/kotlin/ftl/config/FtlConstants.kt b/test_runner/src/main/kotlin/ftl/config/FtlConstants.kt
index 9e752bea5f..b72c6e9972 100644
--- a/test_runner/src/main/kotlin/ftl/config/FtlConstants.kt
+++ b/test_runner/src/main/kotlin/ftl/config/FtlConstants.kt
@@ -27,8 +27,13 @@ import org.slf4j.LoggerFactory
 
 object FtlConstants {
     var useMock = false
-    // depending on environment, it's not always "Mac OS X"
-    val macOS: Boolean = (System.getProperty("os.name") ?: "").toLowerCase().indexOf("mac") >= 0
+
+    val macOS: Boolean by lazy {
+        val osName = System.getProperty("os.name") ?: ""
+        val isMacOS = osName.toLowerCase().indexOf("mac") >= 0
+        println("isMacOS = $isMacOS ($osName)")
+        isMacOS
+    }
     const val localhost = "http://localhost:8080"
 
     const val defaultLocale = "en"
diff --git a/test_runner/src/main/kotlin/ftl/run/TestRunner.kt b/test_runner/src/main/kotlin/ftl/run/TestRunner.kt
index d6c7378cc6..69a3842bf1 100644
--- a/test_runner/src/main/kotlin/ftl/run/TestRunner.kt
+++ b/test_runner/src/main/kotlin/ftl/run/TestRunner.kt
@@ -143,7 +143,9 @@ object TestRunner {
         val resultsFile = Paths.get(args.localResultDir).toFile()
         if (!resultsFile.exists()) return null
 
-        val scheduledRuns = resultsFile.listFiles().filter { it.isDirectory }.sortedBy { it.lastModified() }
+        val scheduledRuns = resultsFile.listFiles()
+            .filter { it.isDirectory }
+            .sortedByDescending { it.lastModified() }
         if (scheduledRuns.isEmpty()) return null
 
         return scheduledRuns.first().name