diff --git a/plugins/org.polarsys.capella.filtering.tools/src/org/polarsys/capella/filtering/tools/actions/FilteringProjectContentsLocationArea.java b/plugins/org.polarsys.capella.filtering.tools/src/org/polarsys/capella/filtering/tools/actions/FilteringProjectContentsLocationArea.java
new file mode 100644
index 00000000..19f2b1b0
--- /dev/null
+++ b/plugins/org.polarsys.capella.filtering.tools/src/org/polarsys/capella/filtering/tools/actions/FilteringProjectContentsLocationArea.java
@@ -0,0 +1,63 @@
+/*******************************************************************************
+ * Copyright (c) 2020 THALES GLOBAL SERVICES.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Thales - initial API and implementation
+ *******************************************************************************/
+package org.polarsys.capella.filtering.tools.actions;
+
+import org.eclipse.core.resources.IProject;
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.runtime.IAdaptable;
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.ui.ISelectionService;
+import org.eclipse.ui.PlatformUI;
+import org.polarsys.capella.common.helpers.EcoreUtil2;
+import org.polarsys.capella.core.platform.sirius.ui.project.internal.CapellaProjectContentsLocationArea;
+
+public class FilteringProjectContentsLocationArea extends CapellaProjectContentsLocationArea {
+
+  public FilteringProjectContentsLocationArea(IErrorMessageReporter reporter, Composite composite) {
+    super(reporter, composite);
+  }
+  
+  @Override
+  public String checkValidLocation() {
+    String isValid = super.checkValidLocation();
+    if(isValid == null) {
+      IProject project = getSelectedProject();
+      if(project != null) {
+        String selectedPrjloc = project.getLocation().toOSString();
+        String trgtPrjLoc = getProjectLocation();
+        if(trgtPrjLoc.startsWith(selectedPrjloc)) {
+          return "Generation is not allowed inside the source project";
+        }
+      }
+    }
+    return isValid;
+  }
+  
+  private IProject getSelectedProject() {
+    ISelectionService selectionService = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getSelectionService();
+    ISelection sel = selectionService.getSelection("capella.project.explorer");
+    Object selectedObject = sel;
+    if (sel instanceof IStructuredSelection) {
+      selectedObject = ((IStructuredSelection) sel).getFirstElement();
+      if(selectedObject instanceof EObject) {
+        return EcoreUtil2.getProject((EObject)selectedObject);
+      }
+      else if (selectedObject instanceof IAdaptable) {
+        IResource res = (IResource) ((IAdaptable) selectedObject).getAdapter(IResource.class);
+        return res.getProject();
+      }
+    }
+    return null;
+  }
+}
diff --git a/plugins/org.polarsys.capella.filtering.tools/src/org/polarsys/capella/filtering/tools/actions/FilteringProjectWizard.java b/plugins/org.polarsys.capella.filtering.tools/src/org/polarsys/capella/filtering/tools/actions/FilteringProjectWizard.java
index dfebae32..d0108d8e 100644
--- a/plugins/org.polarsys.capella.filtering.tools/src/org/polarsys/capella/filtering/tools/actions/FilteringProjectWizard.java
+++ b/plugins/org.polarsys.capella.filtering.tools/src/org/polarsys/capella/filtering/tools/actions/FilteringProjectWizard.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2018 THALES GLOBAL SERVICES.
+ * Copyright (c) 2018, 2020 THALES GLOBAL SERVICES.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -41,7 +41,6 @@
 import org.polarsys.capella.common.tools.report.util.IReportManagerDefaultComponents;
 import org.polarsys.capella.core.data.capellacore.NamedElement;
 import org.polarsys.capella.core.model.handler.helpers.CapellaProjectHelper.ProjectApproach;
-import org.polarsys.capella.core.platform.sirius.ui.project.internal.CapellaProjectContentsLocationArea;
 import org.polarsys.capella.core.platform.sirius.ui.project.internal.ProjectContentsLocationArea;
 import org.polarsys.capella.core.platform.sirius.ui.project.internal.WizardNewProjectCreationPage;
 import org.polarsys.capella.core.platform.sirius.ui.project.operations.ProjectSessionCreationHelper;
@@ -108,7 +107,7 @@ protected WizardNewProjectCreationPage createLocalProjectDescriptionPage() {
        */
       @Override
       protected ProjectContentsLocationArea handleDefaultProjectLocation(Composite parent) {
-        return new CapellaProjectContentsLocationArea(getErrorReporter(), parent);
+        return new FilteringProjectContentsLocationArea(getErrorReporter(), parent);
       }
 
       /**