Load 'stressTest' from gradle project properties (use -PstressTest)
diff --git a/build.gradle b/build.gradle
index 17aaa40..d11d8eb 100644
--- a/build.gradle
+++ b/build.gradle
@@ -62,7 +62,7 @@
 
     tasks.withType(Test) {
         testLogging.showStandardStreams = true
-        def stressTest = System.properties['stressTest']
+        def stressTest = project.properties['stressTest']
         if (stressTest != null) systemProperties['stressTest'] = stressTest
     }