diff --git a/desktop/kde/applications/kmbox/pspec.xml b/desktop/kde/applications/kmbox/pspec.xml
index 9812bc5ccf..40c7107b4d 100755
--- a/desktop/kde/applications/kmbox/pspec.xml
+++ b/desktop/kde/applications/kmbox/pspec.xml
@@ -19,6 +19,7 @@
             <Dependency>extra-cmake-modules</Dependency>
             <Dependency>kmime-devel</Dependency>
             <Dependency>boost-devel</Dependency>
+            <Dependency>kcodecs-devel</Dependency>
         </BuildDependencies>
         <Patches>
             <!--Patch>qt5.patch</Patch-->