1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 08c4dd9b..e64c4254 100644
--- a/Makefile
+++ b/Makefile
@@ -26,7 +26,7 @@ pokeblue_vc_obj    := $(rom_obj:.o=_blue_vc.o)
 
 ### Build tools
 
-ifeq (,$(shell which sha1sum))
+ifeq (,$(shell command -v sha1sum 2>/dev/null))
 SHA1 := shasum
 else
 SHA1 := sha1sum