diff --git a/desktop/kde6/applications/kalgebra-kf6/pspec.xml b/desktop/kde6/applications/kalgebra-kf6/pspec.xml
index 7ebb2a2570..1083aefc0d 100755
--- a/desktop/kde6/applications/kalgebra-kf6/pspec.xml
+++ b/desktop/kde6/applications/kalgebra-kf6/pspec.xml
@@ -23,7 +23,7 @@
             <Dependency versionFrom="5.9.3">qt6-declarative</Dependency>
             <!--<Dependency>qt6-quick1-devel</Dependency>--><!--no longer need-->
             <Dependency versionFrom="6.6.0">qt6-svg-devel</Dependency>
-
+            <Dependency versionFrom="6.6.0">qt6-5compat-devel</Dependency>
             <Dependency versionFrom="24.02.0">analitza-kf6-devel</Dependency>
             <Dependency>kdoctools-kf6-devel</Dependency>
             <Dependency>ncurses-devel</Dependency>