diff --git a/Makefile b/Makefile
index 7660c8b..f009f4c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,14 +1,15 @@
-TARGET   = tiramisu
-SRC     := src/notification.vala src/dbus.vala src/tiramisu.vala
+TARGET      = tiramisu
+SRC        := src/notification.vala src/dbus.vala src/tiramisu.vala
 
-PREFIX  ?= /usr/local
-INSTALL  = install -Dm755
-RM      ?= rm -f
+PREFIX     ?= /usr/local
+INSTALL     = install -Dm755
+RM         ?= rm -f
+PKG_CONFIG ?= pkg-config
 
-VALAC   ?= valac
-CFLAGS  += -Wall -Wno-unused-value
-IFLAGS   = --pkg gio-2.0
-LFLAGS   = `pkg-config --libs glib-2.0 gio-2.0`
+VALAC      ?= valac
+CFLAGS     += -Wall -Wno-unused-value
+IFLAGS      = --pkg gio-2.0
+LFLAGS      = `$(PKG_CONFIG) --libs glib-2.0 gio-2.0`
 
 all: $(TARGET)
 
