diff --git a/README.md b/README.md
index e76c5e0..e84eef3 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 Z = 18y1 + 16y2 + 5y3 + 21y4 --> min  
 1. y1 + 2y2 + 3y4 - y5 >= 2
 2. 3y1 + y2 + y3 - y6 >= 3
-* yi >= 0, i = 1,2,3,4
+* yi >= 0; i = 1,2,3,4