diff --git a/desktop/kde/applications/libkleo/files/qt5.patch b/desktop/kde/applications/libkleo/files/qt5.patch
new file mode 100644
index 0000000000..5b5e29ebe4
--- /dev/null
+++ b/desktop/kde/applications/libkleo/files/qt5.patch
@@ -0,0 +1,38 @@
+diff -Nuar a/CMakeLists.txt b/CMakeLists.txt
+--- a/CMakeLists.txt	2017-12-08 04:04:08.000000000 +0300
++++ b/CMakeLists.txt	2017-12-16 22:30:39.116533942 +0300
+@@ -24,7 +24,7 @@
+ 
+ 
+ set(LIBKLEO_LIB_VERSION ${PIM_VERSION})
+-set(QT_REQUIRED_VERSION "5.8.0")
++set(QT_REQUIRED_VERSION "5.7.1")
+ set(KDEPIMTEXTEDIT_VERSION "5.7.0")
+ 
+ find_package(Qt5 ${QT_REQUIRED_VERSION} CONFIG REQUIRED Widgets)
+diff -Nuar a/src/kleo/dn.cpp b/src/kleo/dn.cpp
+--- a/src/kleo/dn.cpp	2017-12-04 13:20:17.000000000 +0300
++++ b/src/kleo/dn.cpp	2017-12-16 22:35:27.941513102 +0300
+@@ -298,7 +298,9 @@
+         case ';':
+             result += QLatin1Char('\\');
+             // fall through
++#if QT_VERSION >= QT_VERSION_CHECK(5,8,0)
+             Q_FALLTHROUGH();
++#endif
+         default:
+             result += ch;
+         }
+diff -Nuar a/src/utils/formatting.cpp b/src/utils/formatting.cpp
+--- a/src/utils/formatting.cpp	2017-12-04 13:20:17.000000000 +0300
++++ b/src/utils/formatting.cpp	2017-12-16 22:40:08.089492888 +0300
+@@ -593,7 +593,9 @@
+                 return i18nc("good/valid signature", "good");
+             }
+         }
++#if QT_VERSION >= QT_VERSION_CHECK(5,8,0)
+         Q_FALLTHROUGH();
++#endif
+         // fall through:
+     case UserID::Signature::GeneralError:
+         return i18n("invalid");
diff --git a/desktop/kde/applications/libkleo/pspec.xml b/desktop/kde/applications/libkleo/pspec.xml
index 9e48b8ac08..81db22db54 100644
--- a/desktop/kde/applications/libkleo/pspec.xml
+++ b/desktop/kde/applications/libkleo/pspec.xml
@@ -47,6 +47,9 @@
             <Dependency>extra-cmake-modules</Dependency>
             <Dependency>kpimtextedit-devel</Dependency>
         </BuildDependencies>
+        <Patches>
+            <Patch>qt5.patch</Patch>
+        </Patches>
     </Source>
 
     <Package>
@@ -124,7 +127,7 @@
 
     <History>
         <Update release="12">
-            <Date>2017-12-15</Date>
+            <Date>2017-12-16</Date>
             <Version>17.12.0</Version>
             <Comment>Version bump.</Comment>
             <Name>Mustafa Cinasal</Name>