diff --git a/AltairZ80/altairZ80_cpu.c b/AltairZ80/altairz80_cpu.c
similarity index 100%
rename from AltairZ80/altairZ80_cpu.c
rename to AltairZ80/altairz80_cpu.c
diff --git a/AltairZ80/altairZ80_defs.h b/AltairZ80/altairz80_defs.h
similarity index 100%
rename from AltairZ80/altairZ80_defs.h
rename to AltairZ80/altairz80_defs.h
diff --git a/AltairZ80/altairZ80_dsk.c b/AltairZ80/altairz80_dsk.c
similarity index 100%
rename from AltairZ80/altairZ80_dsk.c
rename to AltairZ80/altairz80_dsk.c
diff --git a/AltairZ80/altairZ80_sio.c b/AltairZ80/altairz80_sio.c
similarity index 100%
rename from AltairZ80/altairZ80_sio.c
rename to AltairZ80/altairz80_sio.c
diff --git a/AltairZ80/altairZ80_sys.c b/AltairZ80/altairz80_sys.c
similarity index 100%
rename from AltairZ80/altairZ80_sys.c
rename to AltairZ80/altairz80_sys.c
diff --git a/makefile b/makefile
index 1b8a0f74..2bad0ba3 100644
--- a/makefile
+++ b/makefile
@@ -213,7 +213,7 @@ PDP8 = ${PDP8D}/pdp8_cpu.c ${PDP8D}/pdp8_clk.c ${PDP8D}/pdp8_df.c \
 PDP8_OPT = -I ${PDP8D}
 
 
-H316D = h316
+H316D = H316
 H316 = ${H316D}/h316_stddev.c ${H316D}/h316_lp.c ${H316D}/h316_cpu.c \
 	${H316D}/h316_sys.c ${H316D}/h316_mt.c ${H316D}/h316_fhd.c \
 	${H316D}/h316_dp.c