diff --git a/src/plugins/styles/mac/qmacstyle_mac.mm b/src/plugins/styles/mac/qmacstyle_mac.mm
index b78a977e2a..7b34d3c8a7 100644
--- a/src/plugins/styles/mac/qmacstyle_mac.mm
+++ b/src/plugins/styles/mac/qmacstyle_mac.mm
@@ -2823,9 +2823,6 @@ int QMacStyle::styleHint(StyleHint sh, const QStyleOption *opt, const QWidget *w
     case SH_MessageBox_TextInteractionFlags:
         ret = Qt::TextSelectableByMouse | Qt::LinksAccessibleByMouse | Qt::TextSelectableByKeyboard;
         break;
-    case SH_SpellCheckUnderlineStyle:
-        ret = QTextCharFormat::DashUnderline;
-        break;
     case SH_MessageBox_CenterButtons:
         ret = false;
         break;
diff --git a/src/widgets/styles/qcommonstyle.cpp b/src/widgets/styles/qcommonstyle.cpp
index 37f17f784a..bf4b383ab7 100644
--- a/src/widgets/styles/qcommonstyle.cpp
+++ b/src/widgets/styles/qcommonstyle.cpp
@@ -5272,9 +5272,6 @@ int QCommonStyle::styleHint(StyleHint sh, const QStyleOption *opt, const QWidget
         if (const QPlatformTheme *theme = QGuiApplicationPrivate::platformTheme())
             ret = theme->themeHint(QPlatformTheme::DialogButtonBoxButtonsHaveIcons).toBool() ? 1 : 0;
         break;
-    case SH_SpellCheckUnderlineStyle:
-        ret = QTextCharFormat::WaveUnderline;
-        break;
     case SH_MessageBox_CenterButtons:
         ret = true;
         break;
diff --git a/src/widgets/styles/qstyle.cpp b/src/widgets/styles/qstyle.cpp
index 14dd8ad2be..5f58540eb6 100644
--- a/src/widgets/styles/qstyle.cpp
+++ b/src/widgets/styles/qstyle.cpp
@@ -1814,9 +1814,6 @@ void QStyle::drawItemPixmap(QPainter *painter, const QRect &rect, int alignment,
 
     \value SH_UnderlineShortcut  Whether shortcuts are underlined.
 
-    \value SH_SpellCheckUnderlineStyle  Obsolete. Use SpellCheckUnderlineStyle
-    hint in QPlatformTheme instead.
-
     \value SH_SpinBox_AnimateButton  Animate a click when up or down is
     pressed in a spin box.
     \value SH_SpinBox_KeyPressAutoRepeatRate  Auto-repeat interval for
diff --git a/src/widgets/styles/qstyle.h b/src/widgets/styles/qstyle.h
index b965309d92..0e3495306c 100644
--- a/src/widgets/styles/qstyle.h
+++ b/src/widgets/styles/qstyle.h
@@ -684,7 +684,6 @@ public:
         SH_ComboBox_PopupFrameStyle,
         SH_MessageBox_TextInteractionFlags,
         SH_DialogButtonBox_ButtonsHaveIcons,
-        SH_SpellCheckUnderlineStyle,
         SH_MessageBox_CenterButtons,
         SH_Menu_SelectionWrap,
         SH_ItemView_MovementWithoutUpdatingSelection,