diff -Nru a/cmake-modules/KDEPython.cmake b/cmake-modules/KDEPython.cmake
--- a/cmake-modules/KDEPython.cmake	2017-05-24 09:25:08.000000000 +0200
+++ b/cmake-modules/KDEPython.cmake	2017-07-29 12:24:54.112816202 +0200
@@ -103,8 +103,8 @@
          MESSAGE(STATUS "Project name is necessary to create symlink against python program!!! It will fail.")
     endif(NOT PROJECT_NAME)
 
-    set(TARGET ${CMAKE_INSTALL_PREFIX}/${DATA_INSTALL_DIR}/${PROJECT_NAME}/${_pyname})
-    set(LINK_NAME ${CMAKE_INSTALL_PREFIX}/${BIN_INSTALL_DIR}/${_exename})
+    set(TARGET ${DATA_INSTALL_DIR}/${PROJECT_NAME}/${_pyname})
+    set(LINK_NAME ${BIN_INSTALL_DIR}/${_exename})
 
     GET_FILENAME_COMPONENT(abs_link_name $ENV{DESTDIR}/${LINK_NAME} ABSOLUTE)
     GET_FILENAME_COMPONENT(link_path $ENV{DESTDIR}/${LINK_NAME} PATH)