diff --git a/sleepyhead/preferencesdialog.cpp b/sleepyhead/preferencesdialog.cpp
index 461f396a..20239cbe 100644
--- a/sleepyhead/preferencesdialog.cpp
+++ b/sleepyhead/preferencesdialog.cpp
@@ -48,6 +48,7 @@ const int num_masks = sizeof(masks) / sizeof(MaskProfile);
 void PreferencesDialog::showEvent(QShowEvent * event)
 {
     mainwin->getDaily()->graphView()->releaseKeyboard();
+    mainwin->getOverview()->graphView()->releaseKeyboard();
 }
 
 PreferencesDialog::PreferencesDialog(QWidget *parent, Profile *_profile) :