diff --git a/Makefile b/Makefile
index 84ed332..ae26b8d 100644
--- a/Makefile
+++ b/Makefile
@@ -13,6 +13,9 @@ all:	essai
 essai:		essai.c libfloatimg.a floatimg.h Makefile
 	gcc $(COPT) $< $(LDOPT) -lpnglite -lz -o $@
 
+install:
+	@echo "=== Use the 'install.sh' script ==="
+
 #---------------------------------------------------------------
 
 TOTAR = *.[ch] Makefile *.sh *.md 			\