diff --git a/src/Makefile.global.in b/src/Makefile.global.in
index 5dacc4d..a9a797e 100644
--- a/src/Makefile.global.in
+++ b/src/Makefile.global.in
@@ -100,14 +100,14 @@ datarootdir := @datarootdir@
 
 bindir := @bindir@
 
-datadir := @datadir@
+datadir := @datadir@/postgresql
 ifeq "$(findstring pgsql, $(datadir))" ""
 ifeq "$(findstring postgres, $(datadir))" ""
 override datadir := $(datadir)/postgresql
 endif
 endif
 
-sysconfdir := @sysconfdir@
+sysconfdir := @sysconfdir@/postgresql
 ifeq "$(findstring pgsql, $(sysconfdir))" ""
 ifeq "$(findstring postgres, $(sysconfdir))" ""
 override sysconfdir := $(sysconfdir)/postgresql
@@ -116,7 +116,7 @@ endif
 
 libdir := @libdir@
 
-pkglibdir = $(libdir)
+pkglibdir = $(libdir)/postgresql
 ifeq "$(findstring pgsql, $(pkglibdir))" ""
 ifeq "$(findstring postgres, $(pkglibdir))" ""
 override pkglibdir := $(pkglibdir)/postgresql
@@ -125,7 +125,7 @@ endif
 
 includedir := @includedir@
 
-pkgincludedir = $(includedir)
+pkgincludedir = $(includedir)/postgresql
 ifeq "$(findstring pgsql, $(pkgincludedir))" ""
 ifeq "$(findstring postgres, $(pkgincludedir))" ""
 override pkgincludedir := $(pkgincludedir)/postgresql
@@ -134,7 +134,7 @@ endif
 
 mandir := @mandir@
 
-docdir := @docdir@
+docdir := @docdir@/postgresql
 ifeq "$(findstring pgsql, $(docdir))" ""
 ifeq "$(findstring postgres, $(docdir))" ""
 override docdir := $(docdir)/postgresql