diff --git proftpd/configure.in proftpd/configure.in
index 63a79d6..4f8e115 100644
--- proftpd/configure.in
+++ proftpd/configure.in
@@ -2148,8 +2148,6 @@ exec_prefix="$pr_saved_exec_prefix"
 
 if test x"$pkgconfigdir" = xNONE ; then
   pkgconfigdir="${libdir}/pkgconfig"
-else
-  pkgconfigdir="${prefix}/$pkgconfigdir"
 fi
 AC_SUBST(pkgconfigdir)