diff --git a/1984/anonymous/Makefile b/1984/anonymous/Makefile
index 9faa8dc46..2df6a1d9b 100644
--- a/1984/anonymous/Makefile
+++ b/1984/anonymous/Makefile
@@ -443,6 +443,7 @@ all: ${DATA} ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
+	@echo "NOTE: This entry most likely will not work under macOS."
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
 # alternative executable