diff --git a/make/defs.mk b/make/defs.mk
index b12fece3..8b1fd10b 100644
--- a/make/defs.mk
+++ b/make/defs.mk
@@ -46,7 +46,9 @@ ifeq ($(PROJECT),)
   PROJECT             := $(patsubst $(FLAVOUR_PREFIX)%,%,$(notdir $(shell cd $(TOPDIR); $(PWD) | $(SED) 's/.*\///; s/-[0-9].*//')))
 endif
 
-OS                    ?= $(shell /bin/bash $(MOD_SCRIPT_DIR)/get-os.sh)
+GET_OS_SH             ?= /bin/bash $(MOD_SCRIPT_DIR)/get-os.sh
+OS                    ?= $(shell $(GET_OS_SH))
+OS_NAME               ?= $(shell $(GET_OS_SH) name)
 
 CREATE_DEVEL          ?= true
 #COMPILER_SUITE        ?= clang