diff --git a/src/kcolorbutton.cpp b/src/kcolorbutton.cpp
--- a/src/kcolorbutton.cpp
+++ b/src/kcolorbutton.cpp
@@ -243,16 +243,14 @@
 {
     QStyleOptionButton opt;
     d->initStyleOption(&opt);
-    return style()->sizeFromContents(QStyle::CT_PushButton, &opt, QSize(40, 15), this).
-           expandedTo(QApplication::globalStrut());
+    return style()->sizeFromContents(QStyle::CT_PushButton, &opt, QSize(40, 15), this);
 }
 
 QSize KColorButton::minimumSizeHint() const
 {
     QStyleOptionButton opt;
     d->initStyleOption(&opt);
-    return style()->sizeFromContents(QStyle::CT_PushButton, &opt, QSize(3, 3), this).
-           expandedTo(QApplication::globalStrut());
+    return style()->sizeFromContents(QStyle::CT_PushButton, &opt, QSize(3, 3), this);
 }
 
 void KColorButton::dragEnterEvent(QDragEnterEvent *event)
diff --git a/src/kdatepicker.cpp b/src/kdatepicker.cpp
--- a/src/kdatepicker.cpp
+++ b/src/kdatepicker.cpp
@@ -613,7 +613,7 @@
 
     QSize metricBound = style()->sizeFromContents(
                             QStyle::CT_ToolButton, &opt, QSize(w, h), d->selectMonth
-                        ).expandedTo(QApplication::globalStrut());
+                        );
 
     d->selectMonth->setMinimumSize(metricBound);
 }