diff --git a/man.changes b/man.changes
index 83abf77..6a16939 100644
--- a/man.changes
+++ b/man.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Feb 16 10:00:30 UTC 2017 - werner@suse.de
+
+- Use _libexecdir instead of _prefix/lib 
+
 -------------------------------------------------------------------
 Fri Dec 16 09:37:34 UTC 2016 - werner@suse.de
 
diff --git a/man.spec b/man.spec
index 0b6a416..99525c1 100644
--- a/man.spec
+++ b/man.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package man
 #
-# Copyright (c) 2016 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2017 SUSE LINUX GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -123,7 +123,7 @@ Authors:
     rm -f configure
 %global optflags %{optflags} -funroll-loops -pipe -Wall
     if grep -q _DEFAULT_SOURCE /usr/include/features.h ; then
-	CFLAGS="%{optflags} -D_DEFAULT_SOURCE"
+	CFLAGS="%{optflags} -D_GNU_SOURCE -D_DEFAULT_SOURCE"
     else
 	CFLAGS="%{optflags} -D_GNU_SOURCE -D_SVID_SOURCE"
     fi
@@ -189,7 +189,7 @@ fi
 %endif
     rm -rf   %{buildroot}%{_localstatedir}/cache/man
     mkdir -p %{buildroot}%{_datadir}/doc/packages/man
-    mkdir -p %{buildroot}%{_prefix}/lib/man-db
+    mkdir -p %{buildroot}%{_libexecdir}/man-db
     mkdir -p %{buildroot}%{_bindir}
     mkdir -p %{buildroot}/etc
     make nls=all install DESTDIR=%{buildroot}
@@ -198,12 +198,12 @@ fi
 	     %{buildroot}%{_datadir}/doc/packages/man/
     # wrapper which drops roots privileges if root executes man or mandb
     if test -x %{buildroot}%{_bindir}/mandb ; then
-	mv   %{buildroot}%{_bindir}/mandb %{buildroot}%{_prefix}/lib/man-db/
+	mv   %{buildroot}%{_bindir}/mandb %{buildroot}%{_libexecdir}/man-db/
 	install wrapper %{buildroot}%{_bindir}/mandb
     fi
 %if %{with wrapman}
     if test -x %{buildroot}%{_bindir}/man ; then
-	mv   %{buildroot}%{_bindir}/man   %{buildroot}%{_prefix}/lib/man-db/
+	mv   %{buildroot}%{_bindir}/man   %{buildroot}%{_libexecdir}/man-db/
 	ln -sf mandb %{buildroot}%{_bindir}/man
     fi
 %endif