diff --git a/MainWidget.cpp b/MainWidget.cpp
index 60ef2f3..589bbce 100644
--- a/MainWidget.cpp
+++ b/MainWidget.cpp
@@ -434,7 +434,7 @@ void MainWidget::search(const QString& key)
     }
 
     QRegularExpression regex;
-    if (!ui->cbCaseSensitive->isChecked()) {
+    if (ui->cbCaseSensitive->isChecked()) {
         regex = QRegularExpression(bkey);
     } else {
         regex = QRegularExpression(bkey, QRegularExpression::CaseInsensitiveOption);