diff -urp libvirt-5.1.0.orig/src/Makefile.in libvirt-5.1.0/src/Makefile.in
--- libvirt-5.1.0.orig/src/Makefile.in	2019-03-23 11:51:54.916000000 +0100
+++ libvirt-5.1.0/src/Makefile.in	2019-03-23 11:54:04.581000000 +0100
@@ -6219,7 +6219,7 @@ REMOTE_DRIVER_PROTOCOL = \
 
 # Use $(prefix)/lib rather than $(libdir), since man sysctl.d insists on
 # /usr/lib/sysctl.d/ even when libdir is /usr/lib64
-@WITH_LIBVIRTD_TRUE@@WITH_SYSCTL_TRUE@sysctldir = $(prefix)/lib/sysctl.d
+@WITH_LIBVIRTD_TRUE@@WITH_SYSCTL_TRUE@sysctldir = $(sysconfdir)/sysctl.d
 @WITH_LIBVIRTD_TRUE@@WITH_POLKIT_TRUE@polkitdir = $(datadir)/polkit-1
 @WITH_LIBVIRTD_TRUE@@WITH_POLKIT_TRUE@polkitactionsdir = $(polkitdir)/actions
 @WITH_LIBVIRTD_TRUE@@WITH_POLKIT_TRUE@polkitrulesdir = $(polkitdir)/rules.d
diff -urp libvirt-5.1.0.orig/src/remote/Makefile.inc.am libvirt-5.1.0/src/remote/Makefile.inc.am
--- libvirt-5.1.0.orig/src/remote/Makefile.inc.am	2019-03-23 11:51:54.904000000 +0100
+++ libvirt-5.1.0/src/remote/Makefile.inc.am	2019-03-23 11:55:06.720000000 +0100
@@ -193,7 +193,7 @@ check-augeas-remote: test_libvirtd.aug
 if WITH_SYSCTL
 # Use $(prefix)/lib rather than $(libdir), since man sysctl.d insists on
 # /usr/lib/sysctl.d/ even when libdir is /usr/lib64
-sysctldir = $(prefix)/lib/sysctl.d
+sysctldir = $(sysconfdir)/sysctl.d
 
 install-sysctl:
 	$(MKDIR_P) $(DESTDIR)$(sysctldir)