diff --git a/du5/program.c b/du5/program.c
index 5721f23..66e6767 100644
--- a/du5/program.c
+++ b/du5/program.c
@@ -68,7 +68,7 @@ void Sort_Sname(struct LIS *list,int count){
     struct LIS ilusion;
     for(int i=count-1;i<0;i--){
         for(int j=0;j<i;j++){
-            if(list[j].num==list[j+1].num && strcmp(list[j].sname,list[j+1].sname)>0 ){
+            if(list[j].num==list[j+1].num && strcmp(list[j].sname,list[j+1].sname)<0 ){
                 ilusion=list[j];
                 list[j]=list[j+1];
                 list[j+1]=ilusion;