diff --git a/cockatrice/src/interface/widgets/utility/line_edit_completer.cpp b/cockatrice/src/interface/widgets/utility/line_edit_completer.cpp
index 95e335963..8d4a4f973 100644
--- a/cockatrice/src/interface/widgets/utility/line_edit_completer.cpp
+++ b/cockatrice/src/interface/widgets/utility/line_edit_completer.cpp
@@ -123,10 +123,12 @@ void LineEditCompleter::keyPressEvent(QKeyEvent *event)
                     insertCompletion(info.completer, completionText);
                 }
                 hideCompleterPopups();
-                setFocus();
                 return;
             }
         }
+        // If no popup is visible, prevent Tab from moving focus
+        event->ignore();
+        return;
     }
 
     LineEditUnfocusable::keyPressEvent(event);