diff --git a/desktop/kde/applications/krfb/pspec.xml b/desktop/kde/applications/krfb/pspec.xml
index 356cb93970..cbf2597489 100755
--- a/desktop/kde/applications/krfb/pspec.xml
+++ b/desktop/kde/applications/krfb/pspec.xml
@@ -34,7 +34,8 @@
             <Dependency>libXdamage-devel</Dependency>
             <Dependency>libxcb-devel</Dependency>
             <Dependency>libXext-devel</Dependency>
-            <Dependency>libXtst-devel</Dependency> 
+            <Dependency>libXtst-devel</Dependency>
+            <Dependency>kwindowsystem-devel</Dependency>
             <Dependency>xcb-util-image-devel</Dependency>
         </BuildDependencies>
     </Source>
@@ -59,6 +60,7 @@
             <Dependency versionFrom="5.7.1">qt5-x11extras</Dependency>
             <Dependency>kconfigwidgets</Dependency>
             <Dependency>knotifications</Dependency>
+            <Dependency>kwindowsystem</Dependency>
             <Dependency>kwidgetsaddons</Dependency>
             <Dependency>xcb-util-image</Dependency>
         </RuntimeDependencies>