diff --git a/Plugins/org.mitk.gui.qt.extapplication/resources/welcome/images/welcome/alt.PNG b/Plugins/org.mitk.gui.qt.extapplication/resources/welcome/images/welcome/Alt.png
similarity index 100%
rename from Plugins/org.mitk.gui.qt.extapplication/resources/welcome/images/welcome/alt.PNG
rename to Plugins/org.mitk.gui.qt.extapplication/resources/welcome/images/welcome/Alt.png
diff --git a/Plugins/org.mitk.gui.qt.extapplication/resources/welcome/images/welcome/esc.png b/Plugins/org.mitk.gui.qt.extapplication/resources/welcome/images/welcome/Esc.png
similarity index 100%
rename from Plugins/org.mitk.gui.qt.extapplication/resources/welcome/images/welcome/esc.png
rename to Plugins/org.mitk.gui.qt.extapplication/resources/welcome/images/welcome/Esc.png