diff --git a/setup/runtimeenv.class.inc.php b/setup/runtimeenv.class.inc.php
index 945e913225..2dd8a66d39 100644
--- a/setup/runtimeenv.class.inc.php
+++ b/setup/runtimeenv.class.inc.php
@@ -1029,4 +1029,4 @@ public function CheckMetaModel()
 
 		return sprintf("Checked %d classes in %.1f ms. No error found.\n", $iCount, $fDuration * 1000.0);
 	}
-} // End of class
\ No newline at end of file
+} // End of class
diff --git a/setup/wizardsteps.class.inc.php b/setup/wizardsteps.class.inc.php
index 148da3011e..88ce73756a 100644
--- a/setup/wizardsteps.class.inc.php
+++ b/setup/wizardsteps.class.inc.php
@@ -1368,6 +1368,52 @@ public function GetPossibleSteps()
 		return ['WizStepModulesChoice', 'WizStepSummary'];
 	}
 
+	public function GetAddedAndRemovedExtensions($aSelectedExtensions)
+	{
+		$aExtensionsAdded = [];
+		$aExtensionsRemoved = [];
+		$aExtensionsNotUninstallable = [];
+		foreach ($this->oExtensionsMap->GetAllExtensionsWithPreviouslyInstalled() as $oExtension) {
+			/* @var \iTopExtension $oExtension */
+			$bSelected = in_array($oExtension->sCode, $aSelectedExtensions);
+			if ($oExtension->bInstalled && !$bSelected) {
+				$aExtensionsRemoved[$oExtension->sCode] = $oExtension->sLabel;
+				if (!$oExtension->CanBeUninstalled()) {
+					$aExtensionsNotUninstallable[$oExtension->sCode] = true;
+				}
+			} elseif (!$oExtension->bInstalled && $bSelected) {
+				$aExtensionsAdded[$oExtension->sCode] = $oExtension->sLabel;
+			}
+		}
+
+		$sExtensionsAdded = '';
+		if (count($aExtensionsAdded) > 0) {
+			$sExtensionsAdded = '<ul>';
+			foreach ($aExtensionsAdded as $sExtensionCode) {
+				$sExtensionsAdded .= '<li>'.$sExtensionCode.'</li>';
+			}
+			$sExtensionsAdded .= '</ul>';
+		} else {
+			$sExtensionsAdded = '<ul><li>No extension added.</li></ul>';
+		}
+
+		$sExtensionsRemoved = '';
+		if (count($aExtensionsRemoved) > 0) {
+			$sExtensionsRemoved = '<ul>';
+			foreach ($aExtensionsRemoved as $sCode => $sExtensionCode) {
+				$sForcedUninstall = '';
+				if (isset($aExtensionsNotUninstallable[$sCode])) {
+					$sForcedUninstall = ' (forced uninstallation)';
+				}
+				$sExtensionsRemoved .= '<li>'.$sExtensionCode.$sForcedUninstall.'</li>';
+			}
+			$sExtensionsRemoved .= '</ul>';
+		} else {
+			$sExtensionsRemoved = '<ul><li>No extension removed.</li></ul>';
+		}
+		return [$sExtensionsAdded, $sExtensionsRemoved];
+	}
+
 	public function ProcessParams($bMoveForward = true)
 	{
 		// Accumulates the selected modules:
@@ -1397,9 +1443,14 @@ public function ProcessParams($bMoveForward = true)
 				if (class_exists('CreateITILProfilesInstaller')) {
 					$this->oWizard->SetParameter('old_addon', true);
 				}
+
+				[$sExtensionsAdded, $sExtensionsRemoved] = $this->GetAddedAndRemovedExtensions($aExtensions);
+
 				$this->oWizard->SetParameter('selected_modules', json_encode(array_keys($aModules)));
 				$this->oWizard->SetParameter('selected_extensions', json_encode($aExtensions));
 				$this->oWizard->SetParameter('display_choices', $sDisplayChoices);
+				$this->oWizard->SetParameter('extensions_added', $sExtensionsAdded);
+				$this->oWizard->SetParameter('extensions_removed', $sExtensionsRemoved);
 				return ['class' => 'WizStepSummary', 'state' => ''];
 			}
 
@@ -2217,6 +2268,14 @@ public function Display(WebPage $oPage)
 
 		$oPage->add('<fieldset id="summary"><legend>Installation Parameters</legend>');
 		$oPage->add('<div id="params_summary">');
+
+		$oPage->add('<div class="closed"><span class="title ibo-setup-summary-title">Extensions to be installed</span>');
+		$oPage->add($this->oWizard->GetParameter('extensions_added'));
+		$oPage->add('</div>');
+		$oPage->add('<div class="closed"><span class="title ibo-setup-summary-title">Extensions to be uninstalled</span>');
+		$oPage->add($this->oWizard->GetParameter('extensions_removed'));
+		$oPage->add('</div>');
+
 		$oPage->add('<div class="closed"><span class="title ibo-setup-summary-title">Database Parameters</span><ul>');
 		$oPage->add('<li>Server Name: '.$aInstallParams['database']['server'].'</li>');
 		$oPage->add('<li>DB User Name: '.$aInstallParams['database']['user'].'</li>');
diff --git a/tests/php-unit-tests/unitary-tests/datamodels/2.x/itop-config/ConfigTest/config-itop-joker.php b/tests/php-unit-tests/unitary-tests/datamodels/2.x/itop-config/ConfigTest/config-itop-joker.php
index 7c4a359c28..cbce0bb87d 100644
--- a/tests/php-unit-tests/unitary-tests/datamodels/2.x/itop-config/ConfigTest/config-itop-joker.php
+++ b/tests/php-unit-tests/unitary-tests/datamodels/2.x/itop-config/ConfigTest/config-itop-joker.php
@@ -7,30 +7,26 @@
  *
  *
  */
-$MySettings = array(
-
-
+$MySettings = [
 
 	// app_root_url: Root URL used for navigating within the application, or from an email to the application (you can put $SERVER_NAME$ as a placeholder for the server's name)
 	//	default: ''
 	'app_root_url' => 'http://%server(SERVER_NAME)?:localhost%/itop/iTop/',
 
-
-);
+];
 
 /**
  *
  * Modules specific settings
  *
  */
-$MyModuleSettings = array(
-);
+$MyModuleSettings = [
+];
 
 /**
  *
  * Data model modules to be loaded. Names are specified as relative paths
  *
  */
-$MyModules = array(
-);
-?>
\ No newline at end of file
+$MyModules = [
+];
diff --git a/tests/php-unit-tests/unitary-tests/datamodels/2.x/itop-config/ConfigTest/config-itop-var.php b/tests/php-unit-tests/unitary-tests/datamodels/2.x/itop-config/ConfigTest/config-itop-var.php
index a9e41ee35f..3dc1986cd1 100644
--- a/tests/php-unit-tests/unitary-tests/datamodels/2.x/itop-config/ConfigTest/config-itop-var.php
+++ b/tests/php-unit-tests/unitary-tests/datamodels/2.x/itop-config/ConfigTest/config-itop-var.php
@@ -7,30 +7,26 @@
  *
  *
  */
-$MySettings = array(
-
-
+$MySettings = [
 
 	// app_root_url: Root URL used for navigating within the application, or from an email to the application (you can put $SERVER_NAME$ as a placeholder for the server's name)
 	//	default: ''
-	'app_root_url' => 'http://' . (isset($_SERVER['SERVER_NAME']) ? $_SERVER['SERVER_NAME'] : 'localhost') . '/itop/iTop/',
-
+	'app_root_url' => 'http://'.(isset($_SERVER['SERVER_NAME']) ? $_SERVER['SERVER_NAME'] : 'localhost').'/itop/iTop/',
 
-);
+];
 
 /**
  *
  * Modules specific settings
  *
  */
-$MyModuleSettings = array(
-);
+$MyModuleSettings = [
+];
 
 /**
  *
  * Data model modules to be loaded. Names are specified as relative paths
  *
  */
-$MyModules = array(
-);
-?>
\ No newline at end of file
+$MyModules = [
+];
diff --git a/tests/php-unit-tests/unitary-tests/setup/WizStepModulesChoiceTest.php b/tests/php-unit-tests/unitary-tests/setup/WizStepModulesChoiceTest.php
index 11a11fd46c..7bdeac6afc 100644
--- a/tests/php-unit-tests/unitary-tests/setup/WizStepModulesChoiceTest.php
+++ b/tests/php-unit-tests/unitary-tests/setup/WizStepModulesChoiceTest.php
@@ -257,4 +257,99 @@ public function testComputeChoiceFlags($aExtensions, $bUpgrade, $bDisableUninsta
 		$this->assertEquals($aExpectedFlags, $aFlags);
 	}
 
+	public function ProviderGetAddedAndRemovedExtensions()
+	{
+		return [
+			'no extensions' => [
+				'aExtensions' => [],
+
+				'aSelected' => [],
+				'sExpectedAddedList' => '<ul><li>No extension added.</li></ul>',
+				'sExpectedRemovedList' => '<ul><li>No extension removed.</li></ul>',
+			],
+			'no extensions selected' => [
+				'aExtensions' => [
+					'itop-ext1' => [
+						'installed' => false,
+					],
+				],
+				'aSelected' => [],
+				'sExpectedAddedList' => '<ul><li>No extension added.</li></ul>',
+				'sExpectedRemovedList' => '<ul><li>No extension removed.</li></ul>',
+			],
+			'no extensions removed' => [
+				'aExtensions' => [
+					'itop-ext1' => [
+						'installed' => true,
+					],
+				],
+				'aSelected' => ['itop-ext1'],
+				'sExpectedAddedList' => '<ul><li>No extension added.</li></ul>',
+				'sExpectedRemovedList' => '<ul><li>No extension removed.</li></ul>',
+			],
+			'One added extension' => [
+				'aExtensions' => [
+					'itop-ext1' => [
+						'installed' => false,
+					],
+				],
+				'aSelected' => ['itop-ext1'],
+				'sExpectedAddedList' => '<ul><li>itop-ext1</li></ul>',
+				'sExpectedRemovedList' => '<ul><li>No extension removed.</li></ul>',
+			],
+			'One removed extension' => [
+				'aExtensions' => [
+					'itop-ext1' => [
+						'installed' => true,
+					],
+				],
+				'aSelected' => [],
+				'sExpectedAddedList' => '<ul><li>No extension added.</li></ul>',
+				'sExpectedRemovedList' => '<ul><li>itop-ext1</li></ul>',
+			],
+			'Forced removed extension' => [
+				'aExtensions' => [
+					'itop-ext1' => [
+						'installed' => true,
+						'uninstallable' => false,
+					],
+				],
+				'aSelected' => [],
+				'sExpectedAddedList' => '<ul><li>No extension added.</li></ul>',
+				'sExpectedRemovedList' => '<ul><li>itop-ext1 (forced uninstallation)</li></ul>',
+			],
+			'added and removed extensions' => [
+				'aExtensions' => [
+					'itop-ext-added1' => [
+						'installed' => false,
+					],
+					'itop-ext-added2' => [
+						'installed' => false,
+					],
+					'itop-ext-removed1' => [
+						'installed' => true,
+					],
+					'itop-ext-removed2' => [
+						'installed' => true,
+					],
+				],
+				'aSelected' => ['itop-ext-added1', 'itop-ext-added2'],
+				'sExpectedAddedList' => '<ul><li>itop-ext-added1</li><li>itop-ext-added2</li></ul>',
+				'sExpectedRemovedList' => '<ul><li>itop-ext-removed1</li><li>itop-ext-removed2</li></ul>',
+			],
+
+		];
+	}
+
+	/**
+	 * @dataProvider ProviderGetAddedAndRemovedExtensions
+	 */
+	public function testGetAddedAndRemovedExtensions($aExtensions, $aSelectedExtensions, $sExpectedAddedList, $sExpectedRemovedList)
+	{
+		$this->oStep->setExtensionMap(iTopExtensionsMapFake::createFromArray($aExtensions));
+		[$sAddedList, $sRemovedList] = $this->oStep->GetAddedAndRemovedExtensions($aSelectedExtensions);
+		$this->assertEquals($sExpectedAddedList, $sAddedList);
+		$this->assertEquals($sExpectedRemovedList, $sRemovedList);
+	}
+
 }
diff --git a/tests/php-unit-tests/unitary-tests/setup/iTopExtensionsMapFake.php b/tests/php-unit-tests/unitary-tests/setup/iTopExtensionsMapFake.php
index e80b88eb6e..ff1a204afd 100644
--- a/tests/php-unit-tests/unitary-tests/setup/iTopExtensionsMapFake.php
+++ b/tests/php-unit-tests/unitary-tests/setup/iTopExtensionsMapFake.php
@@ -12,9 +12,11 @@ public function __construct($sFromEnvironment = 'production', $aExtraDirs = [])
 	public static function createFromArray($aExtensions)
 	{
 		$oMap = new static();
+
 		foreach ($aExtensions as $sCode => $aExtension) {
 			$oExtension = new iTopExtension();
 			$oExtension->sCode = $sCode;
+			$oExtension->sLabel = $sCode;
 			$oExtension->bInstalled = $aExtension['installed'];
 			$oExtension->aModules = $aExtension['modules'] ?? [];
 			$oExtension->bCanBeUninstalled = $aExtension['uninstallable'] ?? null;