diff --git a/src/Simplex.java b/src/Simplex.java
index 0f539aef0b27ac08b2e51c1450a30b1bb04fb3e6..44fe84d48f3c9d20faf860231186a6635eb29c4b 100644
--- a/src/Simplex.java
+++ b/src/Simplex.java
@@ -162,7 +162,7 @@ public class Simplex {
 
     int ligneSortante(Matrix mat, int y) {
         int id = 0;
-        while (mat.getData(id, y) < 0) {
+        while (mat.getData(id, y) <= 0) {
             id++;
         }
         double tmp = mat.getData(id, mat.getY() - 1) / mat.getData(id, y);