diff --git a/typo3/sysext/install/Resources/Private/Templates/Action/Step/EnvironmentAndFolders.html b/typo3/sysext/install/Resources/Private/Templates/Action/Step/EnvironmentAndFolders.html
index 7b4dba5ae7fcfb77fea5191f2566c9861eeb5b20..9e5c1f4e8ba540dc8a7b7dee97cef07e0dc77cd0 100644
--- a/typo3/sysext/install/Resources/Private/Templates/Action/Step/EnvironmentAndFolders.html
+++ b/typo3/sysext/install/Resources/Private/Templates/Action/Step/EnvironmentAndFolders.html
@@ -40,7 +40,7 @@
 			<form method="post">
 				<input type="hidden" value="environmentAndFolders" name="install[action]" />
 				<input type="hidden" value="execute" name="install[set]" />
-				<button class="btn success" type="submit">
+				<button class="btn btn-success" type="submit">
 					System looks good. Continue!
 				</button>
 			</form>