diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -56,7 +56,6 @@
     PYTHONNAMESPACE PyKF5
     MODULENAME KConfigCore
     RULES_FILE "${CMAKE_SOURCE_DIR}/cmake/rules_PyKF5.py"
-    INSTALL_DIR_SUFFIX ${KDE_INSTALL_PYTHONBINDINGSDIR}
     SIP_DEPENDS
       QtCore/QtCoremod.sip
     HEADERS
diff --git a/src/gui/CMakeLists.txt b/src/gui/CMakeLists.txt
--- a/src/gui/CMakeLists.txt
+++ b/src/gui/CMakeLists.txt
@@ -40,7 +40,6 @@
     PYTHONNAMESPACE PyKF5
     MODULENAME KConfigGui
     RULES_FILE "${CMAKE_SOURCE_DIR}/cmake/rules_PyKF5.py"
-    INSTALL_DIR_SUFFIX ${KDE_INSTALL_PYTHONBINDINGSDIR}
     SIP_INCLUDES
       "${CMAKE_BINARY_DIR}/src/core/sip"
     SIP_DEPENDS