diff --git a/xcb-proto.pc.in b/xcb-proto.pc.in
index 6cbcf27..d312e6e 100644
--- a/xcb-proto.pc.in
+++ b/xcb-proto.pc.in
@@ -1,6 +1,8 @@
 prefix=@prefix@
+exec_prefix=@exec_prefix@
 datarootdir=@datarootdir@
 datadir=@datadir@
+libdir=@libdir@
 xcbincludedir=@xcbincludedir@
 pythondir=@pythondir@