diff -rupN --no-dereference thinkfan-1.3.1/CMakeLists.txt thinkfan-1.3.1-new/CMakeLists.txt
--- thinkfan-1.3.1/CMakeLists.txt	2022-02-05 16:12:20.000000000 +0100
+++ thinkfan-1.3.1-new/CMakeLists.txt	2022-02-07 10:08:13.703113795 +0100
@@ -139,17 +139,7 @@ if(SYSTEMD_FOUND)
 		rcscripts/systemd/thinkfan-sleep.service
 		rcscripts/systemd/thinkfan-wakeup.service
 		"${CMAKE_BINARY_DIR}/rcscripts/systemd/thinkfan.service"
-		DESTINATION "${CMAKE_INSTALL_PREFIX}/lib/systemd/system")
-	if(NOT EXISTS "/etc/systemd/system/thinkfan.service.d/override.conf")
-		install(FILES
-			rcscripts/systemd/override.conf
-			DESTINATION "/etc/systemd/system/thinkfan.service.d")
-	else()
-		install(FILES
-			rcscripts/systemd/override.conf
-			DESTINATION "/etc/systemd/system/thinkfan.service.d"
-			RENAME "default.conf")
-	endif()
+		DESTINATION "lib/systemd/system")
 endif(SYSTEMD_FOUND)
 
 if(OPENRC_FOUND)
diff -rupN --no-dereference thinkfan-1.3.1/rcscripts/systemd/thinkfan.service.cmake thinkfan-1.3.1-new/rcscripts/systemd/thinkfan.service.cmake
--- thinkfan-1.3.1/rcscripts/systemd/thinkfan.service.cmake	2022-02-05 16:12:20.000000000 +0100
+++ thinkfan-1.3.1-new/rcscripts/systemd/thinkfan.service.cmake	2022-02-07 10:08:13.703113795 +0100
@@ -4,8 +4,8 @@ After=sysinit.target
 After=systemd-modules-load.service
 
 [Service]
-Type=forking
-ExecStart=@CMAKE_INSTALL_PREFIX@/sbin/thinkfan $THINKFAN_ARGS
+EnvironmentFile=-/etc/sysconfig/thinkfan
+ExecStart=@CMAKE_INSTALL_PREFIX@/sbin/thinkfan -n $OPTIONS
 PIDFile=/run/thinkfan.pid
 ExecReload=/bin/kill -HUP $MAINPID