diff --git a/autotests/netwininfotestclient.cpp b/autotests/netwininfotestclient.cpp
--- a/autotests/netwininfotestclient.cpp
+++ b/autotests/netwininfotestclient.cpp
@@ -597,7 +597,7 @@
     QTest::newRow("Dock")         << NET::Dock         << 1 << QByteArrayLiteral("_NET_WM_WINDOW_TYPE_DOCK")     << QByteArray();
     QTest::newRow("Desktop")      << NET::Desktop      << 1 << QByteArrayLiteral("_NET_WM_WINDOW_TYPE_DESKTOP")  << QByteArray();
     QTest::newRow("Tooltip")      << NET::Tooltip      << 1 << QByteArrayLiteral("_NET_WM_WINDOW_TYPE_TOOLTIP")  << QByteArray();
-    QTest::newRow("ComboBox")     << NET::ComboBox     << 1 << QByteArrayLiteral("_NET_WM_WINDOW_TYPE_COMBOBOX") << QByteArray();
+    QTest::newRow("ComboBox")     << NET::ComboBox     << 1 << QByteArrayLiteral("_NET_WM_WINDOW_TYPE_COMBO")    << QByteArray();
     QTest::newRow("DNDIcon")      << NET::DNDIcon      << 1 << QByteArrayLiteral("_NET_WM_WINDOW_TYPE_DND")      << QByteArray();
     QTest::newRow("Normal")       << NET::Normal       << 1 << QByteArrayLiteral("_NET_WM_WINDOW_TYPE_NORMAL")   << QByteArray();
     QTest::newRow("OnScreenDisplay") << NET::OnScreenDisplay << 1 << QByteArrayLiteral("_KDE_NET_WM_WINDOW_TYPE_ON_SCREEN_DISPLAY") << QByteArray();
diff --git a/src/platforms/xcb/atoms_p.h b/src/platforms/xcb/atoms_p.h
--- a/src/platforms/xcb/atoms_p.h
+++ b/src/platforms/xcb/atoms_p.h
@@ -117,7 +117,7 @@
     ENUM(_NET_WM_WINDOW_TYPE_POPUP_MENU),
     ENUM(_NET_WM_WINDOW_TYPE_TOOLTIP),
     ENUM(_NET_WM_WINDOW_TYPE_NOTIFICATION),
-    ENUM(_NET_WM_WINDOW_TYPE_COMBOBOX),
+    ENUM(_NET_WM_WINDOW_TYPE_COMBO),
     ENUM(_NET_WM_WINDOW_TYPE_DND),
 
     // application window state
diff --git a/src/platforms/xcb/netwm.cpp b/src/platforms/xcb/netwm.cpp
--- a/src/platforms/xcb/netwm.cpp
+++ b/src/platforms/xcb/netwm.cpp
@@ -961,7 +961,7 @@
             atoms[pnum++] = p->atom(_NET_WM_WINDOW_TYPE_NOTIFICATION);
         }
         if (p->windowTypes & ComboBoxMask) {
-            atoms[pnum++] = p->atom(_NET_WM_WINDOW_TYPE_COMBOBOX);
+            atoms[pnum++] = p->atom(_NET_WM_WINDOW_TYPE_COMBO);
         }
         if (p->windowTypes & DNDIconMask) {
             atoms[pnum++] = p->atom(_NET_WM_WINDOW_TYPE_DND);
@@ -1286,7 +1286,7 @@
         p->windowTypes |= TooltipMask;
     } else if (atom == p->atom(_NET_WM_WINDOW_TYPE_NOTIFICATION)) {
         p->windowTypes |= NotificationMask;
-    } else if (atom == p->atom(_NET_WM_WINDOW_TYPE_COMBOBOX)) {
+    } else if (atom == p->atom(_NET_WM_WINDOW_TYPE_COMBO)) {
         p->windowTypes |= ComboBoxMask;
     } else if (atom == p->atom(_NET_WM_WINDOW_TYPE_DND)) {
         p->windowTypes |= DNDIconMask;
@@ -3194,7 +3194,7 @@
         break;
 
     case ComboBox:
-        data[0] = p->atom(_NET_WM_WINDOW_TYPE_COMBOBOX);
+        data[0] = p->atom(_NET_WM_WINDOW_TYPE_COMBO);
         data[1] = XCB_NONE;
         len = 1;
         break;
@@ -4213,7 +4213,7 @@
                     p->types[pos++] = Notification;
                 }
 
-                else if (type == p->atom(_NET_WM_WINDOW_TYPE_COMBOBOX)) {
+                else if (type == p->atom(_NET_WM_WINDOW_TYPE_COMBO)) {
                     p->types[pos++] = ComboBox;
                 }