diff --git a/desktop/kde/applications/dolphin/files/kdebug-419585.patch b/desktop/kde/applications/dolphin/files/kdebug-419585.patch
new file mode 100644
index 0000000000..b88d1586d6
--- /dev/null
+++ b/desktop/kde/applications/dolphin/files/kdebug-419585.patch
@@ -0,0 +1,47 @@
+From 35b4c6d4df1281afd621374e686f19e654ad7bae Mon Sep 17 00:00:00 2001
+From: "Martin T. H. Sandsmark" <martin.sandsmark@kde.org>
+Date: Tue, 7 Apr 2020 17:14:59 +0200
+Subject: Fix crashing on starting and quitting
+
+QCollator (especially with Qt 5.14 and ICU 65.1) is very unhappy with
+threads.
+
+To avoid having to lock and unlock the mutex everywhere (and ensure it
+is unlocked before calling other things that might lock it, etc.), we do
+it as locally as possible. Even if for some reason Qt and ICU make
+QCollator threadsafe in the future locking here should have minimal
+impact.
+
+BUG: 419585
+
+Differential Revision: https://phabricator.kde.org/D28659
+---
+ src/kitemviews/kfileitemmodel.cpp | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/src/kitemviews/kfileitemmodel.cpp b/src/kitemviews/kfileitemmodel.cpp
+index 4b35a02..e4dca27 100644
+--- a/src/kitemviews/kfileitemmodel.cpp
++++ b/src/kitemviews/kfileitemmodel.cpp
+@@ -33,6 +33,9 @@
+ #include <QMimeData>
+ #include <QTimer>
+ #include <QWidget>
++#include <QMutex>
++
++Q_GLOBAL_STATIC_WITH_ARGS(QMutex, s_collatorMutex, (QMutex::Recursive))
+ 
+ // #define KFILEITEMMODEL_DEBUG
+ 
+@@ -1878,6 +1881,8 @@ int KFileItemModel::sortRoleCompare(const ItemData* a, const ItemData* b, const
+ 
+ int KFileItemModel::stringCompare(const QString& a, const QString& b, const QCollator& collator) const
+ {
++    QMutexLocker collatorLock(s_collatorMutex());
++
+     if (m_naturalSorting) {
+         return collator.compare(a, b);
+     }
+-- 
+cgit v1.1
+
diff --git a/desktop/kde/applications/dolphin/pspec.xml b/desktop/kde/applications/dolphin/pspec.xml
index 82f7ad3e2d..081e6b3ee5 100755
--- a/desktop/kde/applications/dolphin/pspec.xml
+++ b/desktop/kde/applications/dolphin/pspec.xml
@@ -44,6 +44,7 @@
         </BuildDependencies>
         <Patches>
             <Patch level="1">dolphin-17.04.0-allow-root.patch</Patch>
+            <Patch level="1">kdebug-419585.patch</Patch>
         </Patches>
     </Source>