diff --git a/programs/demos/ray/DATARAY.INC b/programs/demos/ray/dataray.inc
similarity index 100%
rename from programs/demos/ray/DATARAY.INC
rename to programs/demos/ray/dataray.inc
diff --git a/programs/demos/ray/RAY.ASM b/programs/demos/ray/ray.asm
similarity index 100%
rename from programs/demos/ray/RAY.ASM
rename to programs/demos/ray/ray.asm
diff --git a/programs/demos/ray/RAY.INC b/programs/demos/ray/ray.inc
similarity index 100%
rename from programs/demos/ray/RAY.INC
rename to programs/demos/ray/ray.inc