diff --git a/desktop/kde/applications/kcalcore/files/qt5.patch b/desktop/kde/applications/kcalcore/files/qt5.patch
new file mode 100644
index 0000000000..ba6699ec59
--- /dev/null
+++ b/desktop/kde/applications/kcalcore/files/qt5.patch
@@ -0,0 +1,12 @@
+diff -Nuar a/CMakeLists.txt b/CMakeLists.txt
+--- a/CMakeLists.txt	2017-12-02 10:21:00.000000000 +0300
++++ b/CMakeLists.txt	2017-12-16 13:09:19.487857629 +0300
+@@ -23,7 +23,7 @@
+ if(POLICY CMP0053)
+   cmake_policy(SET CMP0053 NEW)
+ endif()
+-set(QT_REQUIRED_VERSION "5.8.0")
++set(QT_REQUIRED_VERSION "5.7.1")
+ 
+ set(KCALENDARCORE_LIB_VERSION ${PIM_VERSION})
+ ecm_setup_version(PROJECT VARIABLE_PREFIX KCALCORE
diff --git a/desktop/kde/applications/kcalcore/pspec.xml b/desktop/kde/applications/kcalcore/pspec.xml
index b390b7ef23..e9da346dcb 100644
--- a/desktop/kde/applications/kcalcore/pspec.xml
+++ b/desktop/kde/applications/kcalcore/pspec.xml
@@ -26,6 +26,9 @@
             <Dependency>libical-devel</Dependency>
             <Dependency>extra-cmake-modules</Dependency>
         </BuildDependencies>
+        <Patches>
+            <Patch>qt5.patch</Patch>
+        </Patches>
     </Source>
 
     <Package>
@@ -65,7 +68,7 @@
 
     <History>
         <Update release="14">
-            <Date>2017-12-15</Date>
+            <Date>2017-12-16</Date>
             <Version>17.12.0</Version>
             <Comment>Version bump.</Comment>
             <Name>Mustafa Cinasal</Name>