diff --git a/Extensions/olcPGEX_Graphics2D.h b/extensions/olcPGEX_Graphics2D.h
similarity index 100%
rename from Extensions/olcPGEX_Graphics2D.h
rename to extensions/olcPGEX_Graphics2D.h
diff --git a/Extensions/olcPGEX_Graphics3D.h b/extensions/olcPGEX_Graphics3D.h
similarity index 100%
rename from Extensions/olcPGEX_Graphics3D.h
rename to extensions/olcPGEX_Graphics3D.h
diff --git a/Extensions/olcPGEX_Network.h b/extensions/olcPGEX_Network.h
similarity index 100%
rename from Extensions/olcPGEX_Network.h
rename to extensions/olcPGEX_Network.h
diff --git a/Extensions/olcPGEX_PopUpMenu.h b/extensions/olcPGEX_PopUpMenu.h
similarity index 100%
rename from Extensions/olcPGEX_PopUpMenu.h
rename to extensions/olcPGEX_PopUpMenu.h
diff --git a/Extensions/olcPGEX_RayCastWorld.h b/extensions/olcPGEX_RayCastWorld.h
similarity index 100%
rename from Extensions/olcPGEX_RayCastWorld.h
rename to extensions/olcPGEX_RayCastWorld.h
diff --git a/Extensions/olcPGEX_Sound.h b/extensions/olcPGEX_Sound.h
similarity index 100%
rename from Extensions/olcPGEX_Sound.h
rename to extensions/olcPGEX_Sound.h
diff --git a/Extensions/olcPGEX_TransformedView.h b/extensions/olcPGEX_TransformedView.h
similarity index 100%
rename from Extensions/olcPGEX_TransformedView.h
rename to extensions/olcPGEX_TransformedView.h