diff -Nrup a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt	2018-09-06 19:53:47.000000000 +0200
+++ b/CMakeLists.txt	2019-03-12 11:17:58.757965739 +0100
@@ -12,6 +12,7 @@ include(ECMInstallIcons)
 
 find_package(Qt5 REQUIRED Core Gui Widgets)
 
+find_package(KF5Auth REQUIRED)
 find_package(KF5CoreAddons REQUIRED)
 find_package(KF5DBusAddons REQUIRED)
 find_package(KF5GlobalAccel REQUIRED)
diff -Nrup a/src/CMakeLists.txt b/src/CMakeLists.txt
--- a/src/CMakeLists.txt	2018-09-06 19:53:47.000000000 +0200
+++ b/src/CMakeLists.txt	2019-03-12 11:17:43.806966748 +0100
@@ -48,6 +48,7 @@ add_executable(kaption ${KAPTION_SRCS})
 
 # Link against the needed libraries
 target_link_libraries(kaption
+    KF5::Auth
     KF5::CoreAddons
     KF5::DBusAddons
     KF5::GlobalAccel