diff --git a/src/performancetest/java/teetime/examples/ChwHomeComparisonMethodcallWithPorts.java b/src/performancetest/java/teetime/examples/ChwHomeComparisonMethodcallWithPorts.java
index faf67e8dfc91d00cbdf0e7af485033c4e22e8ca2..c60da1b243064ef59c651231d1ff067f0de745e7 100644
--- a/src/performancetest/java/teetime/examples/ChwHomeComparisonMethodcallWithPorts.java
+++ b/src/performancetest/java/teetime/examples/ChwHomeComparisonMethodcallWithPorts.java
@@ -71,7 +71,7 @@ public class ChwHomeComparisonMethodcallWithPorts extends AbstractProfiledPerfor
 
 		// check speedup
 		assertEquals(2, (double) test19a.overallDurationInNs / test19b.overallDurationInNs, 0.3);
-		assertEquals(2.5, (double) test19a.overallDurationInNs / test19c.overallDurationInNs, 0.3);
+		assertEquals(2, (double) test19b.overallDurationInNs / test19c.overallDurationInNs, 0.3);
 	}
 
 }
diff --git a/src/performancetest/java/teetime/examples/experiment09pipeimpls/ChwHomePerformanceCheck.java b/src/performancetest/java/teetime/examples/experiment09pipeimpls/ChwHomePerformanceCheck.java
index 0e90896601abfda319d7790fba9989927f10cffa..9560b8840212af5944942882fc1c8307e8cc868f 100644
--- a/src/performancetest/java/teetime/examples/experiment09pipeimpls/ChwHomePerformanceCheck.java
+++ b/src/performancetest/java/teetime/examples/experiment09pipeimpls/ChwHomePerformanceCheck.java
@@ -56,7 +56,7 @@ class ChwHomePerformanceCheck extends AbstractPerformanceCheck {
 		// since 13.12.2014 (incl.)
 		// assertEquals(40, medianSpeedup, 3.2); // -11
 		// since 28.12.2014 (incl.)
-		assertEquals(24, medianSpeedup, 3.2); // -16
+		assertEquals(26, medianSpeedup, 3.2); // -14
 	}
 
 	private void checkOrderedGrowableArrayPipes() {
diff --git a/src/performancetest/java/teetime/framework/OldPipeline.java b/src/performancetest/java/teetime/framework/OldPipeline.java
index 7d24233ed21bf1919bb639491fc34c587cb04aab..225cf0dddb9c32327ef06d8d56a8aefb7532aa76 100644
--- a/src/performancetest/java/teetime/framework/OldPipeline.java
+++ b/src/performancetest/java/teetime/framework/OldPipeline.java
@@ -62,6 +62,11 @@ public class OldPipeline<FirstStage extends Stage, LastStage extends Stage> exte
 		return firstStage.getOwningThread();
 	}
 
+	@Override
+	void setOwningThread(final Thread owningThread) {
+		firstStage.setOwningThread(owningThread);
+	}
+
 	@Override
 	public TerminationStrategy getTerminationStrategy() {
 		return firstStage.getTerminationStrategy();