1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 6cb1fdbf..eecc1565 100644
--- a/Makefile
+++ b/Makefile
@@ -23,7 +23,7 @@ pokeyellow_vc_obj    := $(rom_obj:.o=_vc.o)
 
 ### Build tools
 
-ifeq (,$(shell which sha1sum))
+ifeq (,$(shell command -v sha1sum 2>/dev/null))
 SHA1 := shasum
 else
 SHA1 := sha1sum