diff --git a/gtk/gtk-sharp-3.0.pc.in b/gtk/gtk-sharp-3.0.pc.in
index cd217e1ec..a5ed3ca2c 100644
--- a/gtk/gtk-sharp-3.0.pc.in
+++ b/gtk/gtk-sharp-3.0.pc.in
@@ -7,6 +7,6 @@ gapidir=${prefix}/share/gapi-3.0
 Name: Gtk#
 Description: Gtk# - GNOME .NET Binding
 Version: @VERSION@
-Cflags: -I:${gapidir}/pango-api.xml -I:${gapidir}/atk-api.xml -I:${gapidir}/gtk-api.xml
+Cflags: -I:${gapidir}/cairo-api.xml -I:${gapidir}/pango-api.xml -I:${gapidir}/atk-api.xml -I:${gapidir}/gtk-api.xml
 Libs: -r:${libdir}/mono/@PACKAGE_VERSION@/cairo-sharp.dll -r:${libdir}/mono/@PACKAGE_VERSION@/pango-sharp.dll -r:${libdir}/mono/@PACKAGE_VERSION@/atk-sharp.dll  -r:${libdir}/mono/@PACKAGE_VERSION@/gtk-sharp.dll
 Requires: glib-sharp-3.0 gio-sharp-3.0 gdk-sharp-3.0