Index: CMakeLists.txt
--- CMakeLists.txt.orig
+++ CMakeLists.txt
@@ -607,7 +607,7 @@ if (KF5Purpose_FOUND)
     target_link_libraries(okularpart KF5::PurposeWidgets)
 endif()
 
-set_target_properties(okularpart PROPERTIES PREFIX "")
+#set_target_properties(okularpart PROPERTIES PREFIX "")
 
 if (Qt5TextToSpeech_FOUND)
    target_link_libraries(okularpart Qt5::TextToSpeech)