diff --git a/sddm-theme/theme.conf.cmake b/sddm-theme/theme.conf.cmake
--- a/sddm-theme/theme.conf.cmake
+++ b/sddm-theme/theme.conf.cmake
@@ -4,5 +4,5 @@
 type=image
 color=#1d99f3
 fontSize=10
-background=${CMAKE_INSTALL_PREFIX}/${WALLPAPER_INSTALL_DIR}/Next/contents/images/5120x2880.jpg
+background=${KDE_INSTALL_FULL_WALLPAPERDIR}/Next/contents/images/5120x2880.jpg
 needsFullUserModel=false