diff --git a/Makefile b/Makefile
index ba70deb..2a1a075 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,5 @@
 -include      Makelocal.mk
 PATH_SDCC     ?= /usr/bin
-PATH_HEX2BIN  ?= /usr/bin
 PATH_BIN      := bin
 BUILD_ALL     := "Use 'make help' for possible targets."
 BUILD_HELP    := "Use one of the following build targets;"
@@ -33,7 +32,7 @@ bin/omsxctl/omsxctl.hex: bin/omsxctl/omsxctl.rel
 
 BUILD_HELP += \\n\\t* bin/omsxctl/omsxctl.com
 bin/omsxctl/omsxctl.com: bin/omsxctl/omsxctl.hex
-	cd bin/omsxctl && $(PATH_HEX2BIN)/hex2bin -e com omsxctl.hex
+	$(PATH_SDCC)/sdobjcopy -I ihex --output-target=binary $< $@
 
 bin/dist:
 	mkdir -p bin/dist
diff --git a/Makelocal.mk.tpl b/Makelocal.mk.tpl
index 1342dfe..3a6dd1a 100644
--- a/Makelocal.mk.tpl
+++ b/Makelocal.mk.tpl
@@ -4,4 +4,4 @@
 # Change to local installations if needed;
 
 #PATH_SDCC       ?= /usr/bin
-#PATH_HEX2BIN    ?= /usr/bin
+