diff --git a/desktop/toolkit/qt5/qt5-base/files/0015-remove-deleted-xkb-keys.patch b/desktop/toolkit/qt5/qt5-base/files/0015-remove-deleted-xkb-keys.patch
new file mode 100644
index 0000000000..0c10c9507e
--- /dev/null
+++ b/desktop/toolkit/qt5/qt5-base/files/0015-remove-deleted-xkb-keys.patch
@@ -0,0 +1,45 @@
+diff --git a/src/corelib/global/qnamespace.h b/src/corelib/global/qnamespace.h
+index 8a2769a3ed..584d3620c9 100644
+--- a/src/corelib/global/qnamespace.h
++++ b/src/corelib/global/qnamespace.h
+@@ -832,10 +832,6 @@ namespace Qt {
+         Key_Dead_Small_Schwa    = 0x0100128a,
+         Key_Dead_Capital_Schwa  = 0x0100128b,
+         Key_Dead_Greek          = 0x0100128c,
+-        Key_Dead_Lowline        = 0x01001290,
+-        Key_Dead_Aboveverticalline = 0x01001291,
+-        Key_Dead_Belowverticalline = 0x01001292,
+-        Key_Dead_Longsolidusoverlay = 0x01001293,
+ 
+         // multimedia/internet keys - ignored by default - see QKeyEvent c'tor
+         Key_Back  = 0x01000061,
+diff --git a/src/corelib/global/qnamespace.qdoc b/src/corelib/global/qnamespace.qdoc
+index 78c69176d8..1623517b5a 100644
+--- a/src/corelib/global/qnamespace.qdoc
++++ b/src/corelib/global/qnamespace.qdoc
+@@ -1654,10 +1654,6 @@
+     \value Key_Dead_Small_Schwa
+     \value Key_Dead_Capital_Schwa
+     \value Key_Dead_Greek
+-    \value Key_Dead_Lowline
+-    \value Key_Dead_Aboveverticalline
+-    \value Key_Dead_Belowverticalline
+-    \value Key_Dead_Longsolidusoverlay
+     \value Key_Back
+     \value Key_Forward
+     \value Key_Stop
+diff --git a/src/gui/platform/unix/qxkbcommon.cpp b/src/gui/platform/unix/qxkbcommon.cpp
+index fc014b38e2..af1cbbd42a 100644
+--- a/src/gui/platform/unix/qxkbcommon.cpp
++++ b/src/gui/platform/unix/qxkbcommon.cpp
+@@ -239,10 +239,6 @@ static constexpr const auto KeyTbl = qMakeArray(
+         Xkb2Qt<XKB_KEY_dead_small_schwa,        Qt::Key_Dead_Small_Schwa>,
+         Xkb2Qt<XKB_KEY_dead_capital_schwa,      Qt::Key_Dead_Capital_Schwa>,
+         Xkb2Qt<XKB_KEY_dead_greek,              Qt::Key_Dead_Greek>,
+-        Xkb2Qt<XKB_KEY_dead_lowline,            Qt::Key_Dead_Lowline>,
+-        Xkb2Qt<XKB_KEY_dead_aboveverticalline,  Qt::Key_Dead_Aboveverticalline>,
+-        Xkb2Qt<XKB_KEY_dead_belowverticalline,  Qt::Key_Dead_Belowverticalline>,
+-        Xkb2Qt<XKB_KEY_dead_longsolidusoverlay, Qt::Key_Dead_Longsolidusoverlay>,
+ 
+         // Special keys from X.org - This include multimedia keys,
+         // wireless/bluetooth/uwb keys, special launcher keys, etc.
diff --git a/desktop/toolkit/qt5/qt5-base/pspec.xml b/desktop/toolkit/qt5/qt5-base/pspec.xml
index 0ec492ce26..f5650e945d 100755
--- a/desktop/toolkit/qt5/qt5-base/pspec.xml
+++ b/desktop/toolkit/qt5/qt5-base/pspec.xml
@@ -11,7 +11,7 @@
         <Summary>Cross platform application and UI framework</Summary>
         <Description>Cross platform application and UI development framework</Description>
         <License>'GPL3' 'LGPL3' 'FDL' 'custom'</License>
-        <Archive sha1sum="7f48908f501b741d33d4b130f53d37b327102e95" type="tarbz2">https://invent.kde.org/qt/qt/qtbase/-/archive/kde/5.15/qtbase-kde-5.15.tar.bz2</Archive>
+        <Archive sha1sum="c12e79c73b9c88ba7591a2e6888934c0215f4192" type="tarbz2">https://invent.kde.org/qt/qt/qtbase/-/archive/kde/5.15/qtbase-kde-5.15.tar.bz2</Archive>
         <AdditionalFiles>
 <!--             <AdditionalFile target="qt5-base-nouveau-freeze.patch">qt5-base-nouveau-freeze.patch</AdditionalFile> -->
         </AdditionalFiles>
@@ -89,7 +89,7 @@
             <Patch level="1">mkspecs.patch</Patch>
 <!--             <Patch level="1">qt_kde.patch</Patch> -->
             <Patch level="1">qt5-base-nostrip.patch</Patch>
-<!--             <Patch level="1">qtbug-86319.patch</Patch> -->
+<!--             <Patch level="1">0015-remove-deleted-xkb-keys.patch</Patch> -->
 <!--             <Patch level="1">qtbug-78966.patch</Patch> -->
 <!--             <Patch level="1">qtbug-84619.patch</Patch> -->
         </Patches>