diff --git a/src/CompatibilityChecker.java b/src/CompatibilityChecker.java
index 62a775f..88552cb 100644
--- a/src/CompatibilityChecker.java
+++ b/src/CompatibilityChecker.java
@@ -5,7 +5,6 @@ import java.util.Set;
 import fr.istic.nplouzeau.cartaylor.api.PartType;
 
 
-
 public class CompatibilityChecker implements fr.istic.nplouzeau.cartaylor.api.CompatibilityChecker {
 
     private HashMap<PartType, Set<PartType>> incompatibilities;
@@ -14,7 +13,6 @@ public class CompatibilityChecker implements fr.istic.nplouzeau.cartaylor.api.Co
     public CompatibilityChecker( HashMap<PartType, Set<PartType>> incompatibilities, HashMap<PartType, Set<PartType>> requirements){
         this.incompatibilities=incompatibilities;
         this.requirements= requirements;
-
     }
 
     @Override
diff --git a/src/CompatibilityManager.java b/src/CompatibilityManager.java
index 798c073..be0b4ce 100644
--- a/src/CompatibilityManager.java
+++ b/src/CompatibilityManager.java
@@ -3,7 +3,6 @@ package src;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Set;
-
 import fr.istic.nplouzeau.cartaylor.api.PartType;
 
 public class CompatibilityManager implements fr.istic.nplouzeau.cartaylor.api.CompatibilityManager {
@@ -128,4 +127,9 @@ public class CompatibilityManager implements fr.istic.nplouzeau.cartaylor.api.Co
     public Set<PartType> getRequirements(PartType reference) {
         return this.requirements.get(reference);
     }
+
+    public void addRequirements(src.PartType eH120, HashSet<src.PartType> eH120Requirement) {
+        // TODO Auto-generated method stub
+        throw new UnsupportedOperationException("Unimplemented method 'addRequirements'");
+    }
 }
\ No newline at end of file
diff --git a/src/Configuration.java b/src/Configuration.java
index 3f804cf..f175773 100644
--- a/src/Configuration.java
+++ b/src/Configuration.java
@@ -18,11 +18,11 @@ public class Configuration implements fr.istic.nplouzeau.cartaylor.api.Configura
             for(PartType pt: selectedParts){
                 //Verifier Requirements
                 for(PartType require : compatibilityManager.getRequirements(pt)){
-                    if(!selectedParts.contains(pt)) return false;
+                    if(!selectedParts.contains(require)) return false;
                 }
                 //Verifier Incompabilities
                 for(PartType incompa : compatibilityManager.getIncompatibilities(pt)){
-                    if(selectedParts.contains(pt)) return false;
+                    if(selectedParts.contains(incompa)) return false;
                 }                
             }
             return true;
diff --git a/tests/test.java b/tests/test.java
index 1bbf204..0ea8c70 100644
--- a/tests/test.java
+++ b/tests/test.java
@@ -71,7 +71,7 @@ public class test {
         Set<PartType> ISRequirement = new HashSet<PartType>();
         ISRequirement.add(XS);
 
-        cm.addRequirements(EH120,EH120Requirement);
+        cm.addRequirements(EH120, (HashSet<PartType>) EH120Requirement);
 
 
     }