diff --git a/x11/gdm/Makefile b/x11/gdm/Makefile
index 9f18d67aa8fc..d2a282f2c0e5 100644
--- a/x11/gdm/Makefile
+++ b/x11/gdm/Makefile
@@ -49,15 +49,9 @@ post-patch:
 		 s|DATADIRNAME=lib|DATADIRNAME=share|g' ${WRKSRC}/configure
 
 post-install:
-.if !defined(BATCH) && !defined(PACKAGE_BUILDING)
-	@${SH} ${PKGINSTALL} ${PKGNAME} POST-INSTALL
+.if !defined(PACKAGE_BUILDING)
+	@${SETENV} PKG_PREFIX=${PREFIX} ${SH} ${PKGINSTALL} ${PKGNAME} POST-INSTALL
 .endif
-.if !defined(BATCH) && !defined(PACKAGE_BUILDING)
-	@${CHOWN} -R gdm:gdm ${PREFIX}/share/gnome/gdm ${PREFIX}/etc/gdm
-.else
-	@${CHOWN} -R 92:92 ${PREFIX}/share/gnome/gdm ${PREFIX}/etc/gdm
-.endif
-	@${CHMOD} 0750 ${PREFIX}/share/gnome/gdm
 	@${CAT} ${PKGMESSAGE}
 
 .include <bsd.port.post.mk>
diff --git a/x11/gdm/pkg-install b/x11/gdm/pkg-install
index df128647f968..237a1ceaa0ca 100644
--- a/x11/gdm/pkg-install
+++ b/x11/gdm/pkg-install
@@ -36,10 +36,8 @@ if [ "$2" = "POST-INSTALL" ]; then
 			exit 1
 		fi
 	fi
-	if [ -n "${PKG_PREFIX}" ]; then
-	    ${CHOWN} -R ${USER}:${GROUP} ${PKG_PREFIX}/share/gnome/gdm ${PKG_PREFIX}/etc/gdm
-	    ${CHMOD} 0750 ${PKG_PREFIX}/share/gnome/gdm
-	fi
+        ${CHOWN} -R ${USER}:${GROUP} ${PKG_PREFIX}/share/gnome/gdm ${PKG_PREFIX}/etc/gdm
+        ${CHMOD} 0750 ${PKG_PREFIX}/share/gnome/gdm
 	exit 0
 fi
 
diff --git a/x11/gdm2/Makefile b/x11/gdm2/Makefile
index b6ee39f88381..54491b9daae3 100644
--- a/x11/gdm2/Makefile
+++ b/x11/gdm2/Makefile
@@ -58,16 +58,10 @@ post-patch:
 		 s|DATADIRNAME=lib|DATADIRNAME=share|g' ${WRKSRC}/configure
 
 post-install:
-.if !defined(BATCH) && !defined(PACKAGE_BUILDING)
-	@${SH} ${PKGINSTALL} ${PKGNAME} POST-INSTALL
+.if !defined(PACKAGE_BUILDING)
+	@${SETENV} PKG_PREFIX=${PREFIX} ${SH} ${PKGINSTALL} ${PKGNAME} POST-INSTALL
 .endif
 	@${INSTALL_SCRIPT} ${WRKSRC}/gdm.sh.sample ${PREFIX}/etc/rc.d
-.if !defined(BATCH) && !defined(PACKAGE_BUILDING)
-	@${CHOWN} -R gdm:gdm ${PREFIX}/share/gnome/gdm ${PREFIX}/etc/gdm
-.else
-	@${CHOWN} -R 92:92 ${PREFIX}/share/gnome/gdm ${PREFIX}/etc/gdm
-.endif
-	@${CHMOD} 0750 ${PREFIX}/share/gnome/gdm
 	@${CAT} ${PKGMESSAGE}
 
 .include <bsd.port.post.mk>
diff --git a/x11/gdm2/pkg-install b/x11/gdm2/pkg-install
index df128647f968..237a1ceaa0ca 100644
--- a/x11/gdm2/pkg-install
+++ b/x11/gdm2/pkg-install
@@ -36,10 +36,8 @@ if [ "$2" = "POST-INSTALL" ]; then
 			exit 1
 		fi
 	fi
-	if [ -n "${PKG_PREFIX}" ]; then
-	    ${CHOWN} -R ${USER}:${GROUP} ${PKG_PREFIX}/share/gnome/gdm ${PKG_PREFIX}/etc/gdm
-	    ${CHMOD} 0750 ${PKG_PREFIX}/share/gnome/gdm
-	fi
+        ${CHOWN} -R ${USER}:${GROUP} ${PKG_PREFIX}/share/gnome/gdm ${PKG_PREFIX}/etc/gdm
+        ${CHMOD} 0750 ${PKG_PREFIX}/share/gnome/gdm
 	exit 0
 fi