diff --git a/lab3/UserTable.cc b/lab3/UserTable.cc
index 91db558..ec31eff 100644
--- a/lab3/UserTable.cc
+++ b/lab3/UserTable.cc
@@ -56,8 +56,8 @@ User UserTable::find(int c) const
     while (low < high && ! found) {
         mid = (low + high) / 2;
         //
-        int midnbr = users[mid].getCardNbr();
-        if (midnbr = c) {
+        const int midnbr = users[mid].getCardNbr();
+        if (c == midnbr) {
             found = true;
         } else if (users[mid].getCardNbr() < c) {
             low = mid + 1;