diff --git a/contrib/credential/gnome-keyring/Makefile b/contrib/credential/gnome-keyring/Makefile
index c3c7c98aa126470a4794903bc1e6b3be9b6d58cf..22c19df94b8177c6f264f1053f44f5ead259e730 100644
--- a/contrib/credential/gnome-keyring/Makefile
+++ b/contrib/credential/gnome-keyring/Makefile
@@ -4,12 +4,13 @@ all:: $(MAIN)
 CC = gcc
 RM = rm -f
 CFLAGS = -g -O2 -Wall
+PKG_CONFIG = pkg-config
 
 -include ../../../config.mak.autogen
 -include ../../../config.mak
 
-INCS:=$(shell pkg-config --cflags gnome-keyring-1 glib-2.0)
-LIBS:=$(shell pkg-config --libs gnome-keyring-1 glib-2.0)
+INCS:=$(shell $(PKG_CONFIG) --cflags gnome-keyring-1 glib-2.0)
+LIBS:=$(shell $(PKG_CONFIG) --libs gnome-keyring-1 glib-2.0)
 
 SRCS:=$(MAIN).c
 OBJS:=$(SRCS:.c=.o)