diff --git a/desktop/kde/applications/kblackbox/pspec.xml b/desktop/kde/applications/kblackbox/pspec.xml
index 0159250a69..56e6112343 100755
--- a/desktop/kde/applications/kblackbox/pspec.xml
+++ b/desktop/kde/applications/kblackbox/pspec.xml
@@ -34,6 +34,7 @@
             <Dependency>kemoticons-devel</Dependency>
             <Dependency>kitemmodels-devel</Dependency>
             <Dependency>kinit-devel</Dependency>
+            <Dependency>ktextwidgets-devel</Dependency>
             <Dependency>kunitconversion-devel</Dependency>
         </BuildDependencies>
     </Source>