diff --git a/src/kkeyserver.cpp b/src/kkeyserver.cpp
--- a/src/kkeyserver.cpp
+++ b/src/kkeyserver.cpp
@@ -125,6 +125,7 @@
     case Qt::Key_Return:
     case Qt::Key_Space:
     case Qt::Key_Backspace:
+    case Qt::Key_Tab:
     case Qt::Key_Backtab:
     case Qt::Key_Escape:
     case Qt::Key_Print: