diff --git a/GNUmakefile b/GNUmakefile
index ab62190..70f8577 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -45,7 +45,7 @@ $(libs): %: VERSION .git/index
 	ln -fs $(full) $@
 
 $(pkgconfigs): %: VERSION %.in
-	sed "s/@VERSION@/$(VERSION)/;s,@PREFIX@,$(PREFIX),;s,@LIBDIR@,$(libdir)," $(addsuffix .in, $@) > $@
+	sed "s/@VERSION@/$(VERSION)/;s,@PREFIX@,$(PREFIX),;s,@LIBDIR@,$(libdir),;s,@INCLUDEDIR@,$(includedir)," $(addsuffix .in, $@) > $@
 
 bemenu.1: man/bemenu.1.in
 	sed 's,@LIBDIR@,$(PREFIX)$(libdir),' $< > $@
diff --git a/bemenu.pc.in b/bemenu.pc.in
index cbbe33c..c205ce0 100644
--- a/bemenu.pc.in
+++ b/bemenu.pc.in
@@ -1,7 +1,9 @@
 prefix=@PREFIX@
 libdir=${prefix}@LIBDIR@
+includedir=${prefix}@INCLUDEDIR@
 
 Name: bemenu
 Description: Dynamic menu library
 Version: @VERSION@
 Libs: -L${libdir} -lbemenu
+Cflags: -I${includedir}