diff --git a/Source/HBIOS/Makefile b/Source/HBIOS/Makefile
index a5790a06..df3845ff 100644
--- a/Source/HBIOS/Makefile
+++ b/Source/HBIOS/Makefile
@@ -65,6 +65,7 @@ N8_std.rom: ROMSIZE=512
 RCZ280_nat_zzr.rom: ROMSIZE=256
 
 %.rom:
+	chmod +x Build.sh
 	bash Build.sh $(DIFFBUILD) $(shell echo $* | sed 's/_/ /') $(ROMSIZE)
 
 hbios_rom.bin:	hbios.asm build.inc
diff --git a/Tools/unix/Makefile b/Tools/unix/Makefile
index bbe6724b..04504dac 100644
--- a/Tools/unix/Makefile
+++ b/Tools/unix/Makefile
@@ -12,6 +12,7 @@ endif
 SUBDIRS= bst uz80as zx cpmtools bin2asm lzsa
 
 all:
+	chmod +x casefn.sh
 	@for i in $(SUBDIRS) ; do \
 		(cd $$i ; make all ) \
 	done