diff --git a/libnl-1.pc.in b/libnl-1.pc.in
index 7ac8413..6ad102d 100644
--- a/libnl-1.pc.in
+++ b/libnl-1.pc.in
@@ -7,4 +7,4 @@ Name: libnl
 Description: Convenience library for netlink sockets
 Version: @PACKAGE_VERSION@
 Libs: -L${libdir} -lnl
-Cflags:
+Cflags: -I${includedir}