diff --git a/1989/tromp/Makefile b/1989/tromp/Makefile
index 854e1e651..00c48606b 100644
--- a/1989/tromp/Makefile
+++ b/1989/tromp/Makefile
@@ -186,7 +186,6 @@ all: data ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
-	@echo "NOTE: this entry uses a non-standard arg to main() that will not work some modern compilers."
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
 # alternative executable