diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -54,7 +54,6 @@
     PYTHONNAMESPACE PyKF5
     MODULENAME KCompletion
     RULES_FILE "${CMAKE_SOURCE_DIR}/cmake/rules_PyKF5.py"
-    INSTALL_DIR_SUFFIX ${KDE_INSTALL_PYTHONBINDINGSDIR}
     SIP_DEPENDS
       QtWidgets/QtWidgetsmod.sip
     HEADERS