diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -419,7 +419,7 @@
 if (Qt5TextToSpeech_FOUND)
    target_link_libraries(okularpart Qt5::TextToSpeech)
 endif()
-install(TARGETS okularpart DESTINATION ${KDE_INSTALL_PLUGINDIR})
+install(TARGETS okularpart DESTINATION ${KDE_INSTALL_PLUGINDIR}/kf5/parts)
 
 
 ########### install files ###############
diff --git a/generators/comicbook/okularComicbook.desktop b/generators/comicbook/okularComicbook.desktop
--- a/generators/comicbook/okularComicbook.desktop
+++ b/generators/comicbook/okularComicbook.desktop
@@ -61,6 +61,6 @@
 Name[zh_CN]=Okular
 Name[zh_TW]=文件檢視_Okular
 X-KDE-ServiceTypes=KParts/ReadOnlyPart
-X-KDE-Library=okularpart
+X-KDE-Library=kf5/parts/okularpart
 Type=Service
 MimeType=application/x-cbz;application/x-cbr;application/x-cbt;
diff --git a/generators/djvu/okularDjvu.desktop b/generators/djvu/okularDjvu.desktop
--- a/generators/djvu/okularDjvu.desktop
+++ b/generators/djvu/okularDjvu.desktop
@@ -61,6 +61,6 @@
 Name[zh_CN]=Okular
 Name[zh_TW]=文件檢視_Okular
 X-KDE-ServiceTypes=KParts/ReadOnlyPart
-X-KDE-Library=okularpart
+X-KDE-Library=kf5/parts/okularpart
 Type=Service
 MimeType=image/vnd.djvu;
diff --git a/generators/dvi/okularDvi.desktop b/generators/dvi/okularDvi.desktop
--- a/generators/dvi/okularDvi.desktop
+++ b/generators/dvi/okularDvi.desktop
@@ -61,6 +61,6 @@
 Name[zh_CN]=Okular
 Name[zh_TW]=文件檢視_Okular
 X-KDE-ServiceTypes=KParts/ReadOnlyPart
-X-KDE-Library=okularpart
+X-KDE-Library=kf5/parts/okularpart
 Type=Service
 MimeType=application/x-dvi;application/x-gzdvi;application/x-bzdvi;
diff --git a/generators/epub/okularEPub.desktop b/generators/epub/okularEPub.desktop
--- a/generators/epub/okularEPub.desktop
+++ b/generators/epub/okularEPub.desktop
@@ -61,6 +61,6 @@
 Name[zh_CN]=Okular
 Name[zh_TW]=文件檢視_Okular
 X-KDE-ServiceTypes=KParts/ReadOnlyPart
-X-KDE-Library=okularpart
+X-KDE-Library=kf5/parts/okularpart
 Type=Service
 MimeType=application/epub+zip;
diff --git a/generators/fax/okularFax.desktop b/generators/fax/okularFax.desktop
--- a/generators/fax/okularFax.desktop
+++ b/generators/fax/okularFax.desktop
@@ -61,6 +61,6 @@
 Name[zh_CN]=Okular
 Name[zh_TW]=文件檢視_Okular
 X-KDE-ServiceTypes=KParts/ReadOnlyPart
-X-KDE-Library=okularpart
+X-KDE-Library=kf5/parts/okularpart
 Type=Service
 MimeType=image/fax-g3;image/g3fax;
diff --git a/generators/fictionbook/okularFb.desktop b/generators/fictionbook/okularFb.desktop
--- a/generators/fictionbook/okularFb.desktop
+++ b/generators/fictionbook/okularFb.desktop
@@ -61,6 +61,6 @@
 Name[zh_CN]=Okular
 Name[zh_TW]=文件檢視_Okular
 X-KDE-ServiceTypes=KParts/ReadOnlyPart
-X-KDE-Library=okularpart
+X-KDE-Library=kf5/parts/okularpart
 Type=Service
 MimeType=application/x-fictionbook+xml;
diff --git a/generators/kimgio/okularKimgio.desktop b/generators/kimgio/okularKimgio.desktop
--- a/generators/kimgio/okularKimgio.desktop
+++ b/generators/kimgio/okularKimgio.desktop
@@ -61,6 +61,6 @@
 Name[zh_CN]=Okular
 Name[zh_TW]=文件檢視_Okular
 X-KDE-ServiceTypes=KParts/ReadOnlyPart
-X-KDE-Library=okularpart
+X-KDE-Library=kf5/parts/okularpart
 Type=Service
 MimeType=image/bmp;image/x-dds;image/x-eps;image/x-exr;image/gif;image/x-hdr;image/x-ico;image/jp2;image/jpeg;video/x-mng;image/x-portable-bitmap;image/x-pcx;image/x-portable-graymap;image/png;image/x-portable-pixmap;image/x-psd;image/x-rgb;image/x-tga;image/tiff;image/x-xbitmap;image/x-xcf;image/x-xpixmap;image/x-gzeps;image/x-bzeps;
diff --git a/generators/markdown/okularMd.desktop b/generators/markdown/okularMd.desktop
--- a/generators/markdown/okularMd.desktop
+++ b/generators/markdown/okularMd.desktop
@@ -61,6 +61,6 @@
 Name[zh_CN]=Okular
 Name[zh_TW]=文件檢視_Okular
 X-KDE-ServiceTypes=KParts/ReadOnlyPart
-X-KDE-Library=okularpart
+X-KDE-Library=kf5/parts/okularpart
 Type=Service
 MimeType=text/markdown;
diff --git a/generators/mobipocket/okularMobi.desktop b/generators/mobipocket/okularMobi.desktop
--- a/generators/mobipocket/okularMobi.desktop
+++ b/generators/mobipocket/okularMobi.desktop
@@ -61,6 +61,6 @@
 Name[zh_CN]=Okular
 Name[zh_TW]=文件檢視_Okular
 X-KDE-ServiceTypes=KParts/ReadOnlyPart
-X-KDE-Library=okularpart
+X-KDE-Library=kf5/parts/okularpart
 Type=Service
 MimeType=application/x-mobipocket-ebook;
diff --git a/generators/ooo/okularOoo.desktop b/generators/ooo/okularOoo.desktop
--- a/generators/ooo/okularOoo.desktop
+++ b/generators/ooo/okularOoo.desktop
@@ -61,6 +61,6 @@
 Name[zh_CN]=Okular
 Name[zh_TW]=文件檢視_Okular
 X-KDE-ServiceTypes=KParts/ReadOnlyPart
-X-KDE-Library=okularpart
+X-KDE-Library=kf5/parts/okularpart
 Type=Service
 MimeType=application/vnd.oasis.opendocument.text;
diff --git a/generators/plucker/okularPlucker.desktop b/generators/plucker/okularPlucker.desktop
--- a/generators/plucker/okularPlucker.desktop
+++ b/generators/plucker/okularPlucker.desktop
@@ -61,6 +61,6 @@
 Name[zh_CN]=Okular
 Name[zh_TW]=文件檢視_Okular
 X-KDE-ServiceTypes=KParts/ReadOnlyPart
-X-KDE-Library=okularpart
+X-KDE-Library=kf5/parts/okularpart
 Type=Service
 MimeType=application/prs.plucker;
diff --git a/generators/poppler/okularPoppler.desktop b/generators/poppler/okularPoppler.desktop
--- a/generators/poppler/okularPoppler.desktop
+++ b/generators/poppler/okularPoppler.desktop
@@ -61,6 +61,6 @@
 Name[zh_CN]=Okular
 Name[zh_TW]=文件檢視_Okular
 X-KDE-ServiceTypes=KParts/ReadOnlyPart
-X-KDE-Library=okularpart
+X-KDE-Library=kf5/parts/okularpart
 Type=Service
 MimeType=application/x-pdf;application/pdf;application/x-gzpdf;application/x-bzpdf;application/x-wwf;
diff --git a/generators/spectre/okularGhostview.desktop b/generators/spectre/okularGhostview.desktop
--- a/generators/spectre/okularGhostview.desktop
+++ b/generators/spectre/okularGhostview.desktop
@@ -61,7 +61,7 @@
 Name[zh_CN]=Okular
 Name[zh_TW]=文件檢視_Okular
 X-KDE-ServiceTypes=KParts/ReadOnlyPart
-X-KDE-Library=okularpart
+X-KDE-Library=kf5/parts/okularpart
 InitialPreference=6
 Type=Service
 MimeType=application/postscript;image/x-eps;application/x-gzpostscript;application/x-bzpostscript;image/x-gzeps;image/x-bzeps;
diff --git a/generators/tiff/okularTiff.desktop b/generators/tiff/okularTiff.desktop
--- a/generators/tiff/okularTiff.desktop
+++ b/generators/tiff/okularTiff.desktop
@@ -61,6 +61,6 @@
 Name[zh_CN]=Okular
 Name[zh_TW]=文件檢視_Okular
 X-KDE-ServiceTypes=KParts/ReadOnlyPart
-X-KDE-Library=okularpart
+X-KDE-Library=kf5/parts/okularpart
 Type=Service
 MimeType=image/tiff;
diff --git a/generators/txt/okularTxt.desktop b/generators/txt/okularTxt.desktop
--- a/generators/txt/okularTxt.desktop
+++ b/generators/txt/okularTxt.desktop
@@ -61,6 +61,6 @@
 Name[zh_CN]=Okular
 Name[zh_TW]=文件檢視_Okular
 X-KDE-ServiceTypes=KParts/ReadOnlyPart
-X-KDE-Library=okularpart
+X-KDE-Library=kf5/parts/okularpart
 Type=Service
 MimeType=text/plain;
diff --git a/generators/xps/okularXps.desktop b/generators/xps/okularXps.desktop
--- a/generators/xps/okularXps.desktop
+++ b/generators/xps/okularXps.desktop
@@ -61,6 +61,6 @@
 Name[zh_CN]=Okular
 Name[zh_TW]=文件檢視_Okular
 X-KDE-ServiceTypes=KParts/ReadOnlyPart
-X-KDE-Library=okularpart
+X-KDE-Library=kf5/parts/okularpart
 Type=Service
 MimeType=application/oxps;application/vnd.ms-xpsdocument;
diff --git a/okular_part.desktop b/okular_part.desktop
--- a/okular_part.desktop
+++ b/okular_part.desktop
@@ -61,6 +61,6 @@
 Name[zh_CN]=Okular
 Name[zh_TW]=文件檢視_Okular
 X-KDE-ServiceTypes=KParts/ReadOnlyPart,KParts/ReadWritePart
-X-KDE-Library=okularpart
+X-KDE-Library=kf5/parts/okularpart
 Type=Service
 MimeType=application/vnd.kde.okular-archive;