diff --git a/Source/HBIOS/Config/RCEZ80_std.asm b/Source/HBIOS/Config/RCEZ80_std.asm
index a36b51ac..93129cff 100644
--- a/Source/HBIOS/Config/RCEZ80_std.asm
+++ b/Source/HBIOS/Config/RCEZ80_std.asm
@@ -44,7 +44,7 @@
 ;
 #DEFINE	BOOT_DEFAULT	"H"		; DEFAULT BOOT LOADER CMD ON <CR> OR AUTO BOOT
 ;
-#INCLUDE "cfg_rcez80.asm"
+#INCLUDE "cfg_RCEZ80.asm"
 ;
 CPUOSC		.SET	18432000	; CPU OSC FREQ IN MHZ
 ;
diff --git a/Source/HBIOS/cfg_rcez80.asm b/Source/HBIOS/cfg_RCEZ80.asm
similarity index 100%
rename from Source/HBIOS/cfg_rcez80.asm
rename to Source/HBIOS/cfg_RCEZ80.asm