diff --git a/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/model/perfdatarepo/ObservationRepositoryHandler.java b/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/model/perfdatarepo/ObservationRepositoryHandler.java
index 7fccdc8a4e4daf1168e25457898da435a8ac4c9b..013aac88c0ac5c44d6503a4dae24e085b8344d53 100644
--- a/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/model/perfdatarepo/ObservationRepositoryHandler.java
+++ b/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/model/perfdatarepo/ObservationRepositoryHandler.java
@@ -19,7 +19,7 @@ public class ObservationRepositoryHandler implements IPerformanceDataRepositoryH
     private int iteration = 0;
     
     public ObservationRepositoryHandler() {
-        modelLoader = new ObservationRepositoryModelLoader();
+        modelLoader = ObservationRepositoryModelLoader.getInstance();
         logger.debug("ObservationRepositoryHandler loaded.");
     }
     
diff --git a/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/model/perfdatarepo/PerformanceDataRepositoryHandler.java b/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/model/perfdatarepo/PerformanceDataRepositoryHandler.java
index 2c2f14f0b9cf8ef295b8928ce4c64db44ad9aa9b..4228eac9cae1b42e78f3aa02d690e109963ed5af 100644
--- a/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/model/perfdatarepo/PerformanceDataRepositoryHandler.java
+++ b/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/model/perfdatarepo/PerformanceDataRepositoryHandler.java
@@ -15,7 +15,7 @@ public class PerformanceDataRepositoryHandler implements IPerformanceDataReposit
     private PerformanceDataRepositoryModelLoader modelLoader = null;
     
     public PerformanceDataRepositoryHandler() {
-        modelLoader = new PerformanceDataRepositoryModelLoader();
+        modelLoader = PerformanceDataRepositoryModelLoader.getInstance();
         logger.debug("PerformanceDataRepositoryHandler instantiated.");
     }