diff --git a/communication_techniques/src/calculation/calc_mat.c b/communication_techniques/src/calculation/calc_mat.c
index c7f2bd2..af6a867 100644
--- a/communication_techniques/src/calculation/calc_mat.c
+++ b/communication_techniques/src/calculation/calc_mat.c
@@ -33,6 +33,8 @@ int init_calc(int size)
 	}
 	for (i = 0; i < n * m; i++)
 		mat[i] = rand();
+	for (i = 0; i < m; i++)
+		vect[i] = rand();
 	li = 0;
 	return 0;
 }