diff --git a/desktop/kde/applications/kimap/files/qt5.patch b/desktop/kde/applications/kimap/files/qt5.patch
new file mode 100644
index 0000000000..f77ed6019e
--- /dev/null
+++ b/desktop/kde/applications/kimap/files/qt5.patch
@@ -0,0 +1,13 @@
+diff -Nuar a/src/loginjob.cpp b/src/loginjob.cpp
+--- a/src/loginjob.cpp	2017-12-04 13:20:25.000000000 +0300
++++ b/src/loginjob.cpp	2017-12-16 15:57:30.307129526 +0300
+@@ -425,7 +425,9 @@
+         case LoginJobPrivate::Authenticate:
+             sasl_dispose(&d->conn);   //SASL authentication done
+         // Fall through
++#if QT_VERSION >= QT_VERSION_CHECK(5,8,0)
+             Q_FALLTHROUGH();
++#endif
+         case LoginJobPrivate::Login:
+             d->saveServerGreeting(response);
+             emitResult(); //got an OK, command done
diff --git a/desktop/kde/applications/kimap/pspec.xml b/desktop/kde/applications/kimap/pspec.xml
index 19d80fb583..52f887617b 100644
--- a/desktop/kde/applications/kimap/pspec.xml
+++ b/desktop/kde/applications/kimap/pspec.xml
@@ -28,6 +28,9 @@
             <Dependency>kunitconversion-devel</Dependency>
             <Dependency>extra-cmake-modules</Dependency>
         </BuildDependencies>
+        <Patches>
+            <Patch>qt5.patch</Patch>
+        </Patches>
     </Source>
 
     <Package>