diff --git a/Kernel/cpu-z80/rules.mk b/Kernel/cpu-z80/rules.mk
index 233197a..38fe2a6 100644
--- a/Kernel/cpu-z80/rules.mk
+++ b/Kernel/cpu-z80/rules.mk
@@ -20,7 +20,7 @@ export BITS=16
 #      to look in the usual places !)
 #
 ifeq ($(SDCC_LIB),)
-  ifeq ($(UNAME_S),Darwin)
+  ifeq ($(UNAME_S),$(filter $(UNAME_S),FreeBSD Darwin))
     export LIBZ80=/usr/local/share/sdcc/lib/$(CPU)
   else
     export LIBZ80=/usr/share/sdcc/lib/$(CPU)